Esphinx.addnodesdocument)}( rawsourcechildren]( translations LanguagesNode)}(hhh](h pending_xref)}(hhh]docutils.nodesTextChinese (Simplified)}parenthsba attributes}(ids]classes]names]dupnames]backrefs] refdomainstdreftypedoc reftarget0/translations/zh_CN/driver-api/tty/tty_internalsmodnameN classnameN refexplicitutagnamehhh ubh)}(hhh]hChinese (Traditional)}hh2sbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/zh_TW/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hItalian}hhFsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/it_IT/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hJapanese}hhZsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/ja_JP/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hKorean}hhnsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/ko_KR/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hPortuguese (Brazilian)}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/pt_BR/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hSpanish}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget0/translations/sp_SP/driver-api/tty/tty_internalsmodnameN classnameN refexplicituh1hhh ubeh}(h]h ]h"]h$]h&]current_languageEnglishuh1h hh _documenthsourceNlineNubhcomment)}(h SPDX-License-Identifier: GPL-2.0h]h SPDX-License-Identifier: GPL-2.0}hhsbah}(h]h ]h"]h$]h&] xml:spacepreserveuh1hhhhhhJ/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals.rsthKubhsection)}(hhh](htitle)}(h TTY Internalsh]h TTY Internals}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhhhhKubhtopic)}(hhh]h bullet_list)}(hhh](h list_item)}(hhh]h paragraph)}(hhh]h reference)}(hhh]hKopen}(hhhhhNhNubah}(h]id1ah ]h"]h$]h&]refidkopenuh1hhhubah}(h]h ]h"]h$]h&]uh1hhhubah}(h]h ]h"]h$]h&]uh1hhhubh)}(hhh]h)}(hhh]h)}(hhh]hExported Internal Functions}(hjhhhNhNubah}(h]id2ah ]h"]h$]h&]refidexported-internal-functionsuh1hhjubah}(h]h ]h"]h$]h&]uh1hhjubah}(h]h ]h"]h$]h&]uh1hhhubh)}(hhh]h)}(hhh]h)}(hhh]hInternal Functions}(hj7hhhNhNubah}(h]id3ah ]h"]h$]h&]refidinternal-functionsuh1hhj4ubah}(h]h ]h"]h$]h&]uh1hhj1ubah}(h]h ]h"]h$]h&]uh1hhhubeh}(h]h ]h"]h$]h&]uh1hhhhhhNhNubah}(h]contentsah ](contentslocaleh"]contentsah$]h&]uh1hhhhKhhhhubh)}(hhh](h)}(hKopenh]hKopen}(hjfhhhNhNubah}(h]h ]h"]h$]h&]refidhuh1hhjchhhhhK ubh)}(h=These functions serve for opening a TTY from the kernelspace:h]h=These functions serve for opening a TTY from the kernelspace:}(hjuhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK hjchhubhindex)}(hhh]h}(h]h ]h"]h$]h&]entries](singletty_kclose (C function) c.tty_kclosehNtauh1jhjchhhNhNubhdesc)}(hhh](hdesc_signature)}(h(void tty_kclose (struct tty_struct *tty)h]hdesc_signature_line)}(h'void tty_kclose(struct tty_struct *tty)h](hdesc_sig_keyword_type)}(hvoidh]hvoid}(hjhhhNhNubah}(h]h ]ktah"]h$]h&]uh1jhjhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMNubhdesc_sig_space)}(h h]h }(hjhhhNhNubah}(h]h ]wah"]h$]h&]uh1jhjhhhjhMNubh desc_name)}(h tty_kcloseh]h desc_sig_name)}(h tty_kcloseh]h tty_kclose}(hjhhhNhNubah}(h]h ]nah"]h$]h&]uh1jhjubah}(h]h ](sig-namedescnameeh"]h$]h&]hhuh1jhjhhhjhMNubhdesc_parameterlist)}(h(struct tty_struct *tty)h]hdesc_parameter)}(hstruct tty_struct *ttyh](hdesc_sig_keyword)}(hstructh]hstruct}(hjhhhNhNubah}(h]h ]kah"]h$]h&]uh1jhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomaincreftype identifier reftargetjmodnameN classnameN c:parent_keysphinx.domains.c LookupKey)}data]j1 ASTIdentifier)}j,jsb c.tty_kcloseasbuh1hhjubj)}(h h]h }(hj>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubhdesc_sig_punctuation)}(h*h]h*}(hjNhhhNhNubah}(h]h ]pah"]h$]h&]uh1jLhjubj)}(httyh]htty}(hj]hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubah}(h]h ]h"]h$]h&]hhuh1jhjhhhjhMNubeh}(h]h ]h"]h$]h&]hhƌ add_permalinkuh1jsphinx_line_type declaratorhjhhhjhMNubah}(h]jah ](sig sig-objecteh"]h$]h&] is_multiline _toc_parts) _toc_namehuh1jhjhMNhjhhubh desc_content)}(hhh]h)}(hcloses tty opened by tty_kopenh]hcloses tty opened by tty_kopen}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMNhjhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhMNubeh}(h]h ](j*functioneh"]h$]h&]domainj*objtypejdesctypejnoindex noindexentrynocontentsentryuh1jhhhjchNhNubh container)}(h**Parameters** ``struct tty_struct *tty`` tty device **Description** Performs the final steps to release and free a tty device. 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It is the same as tty_release_struct() except that it also resets }(hj7hhhNhNubj)}(h``TTY_PORT_KOPENED``h]hTTY_PORT_KOPENED}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj7ubh flag on }(hj7hhhNhNubj)}(h **tty->port**h]h tty->port}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj7ubh.}(hj7hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMPhjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhjchhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j tty_kopen_exclusive (C function)c.tty_kopen_exclusivehNtauh1jhjchhhNhNubj)}(hhh](j)}(h6struct tty_struct * tty_kopen_exclusive (dev_t device)h]j)}(h4struct tty_struct *tty_kopen_exclusive(dev_t device)h](j)}(hjh]hstruct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhhjhMubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j9)}j,tty_kopen_exclusivesbc.tty_kopen_exclusiveasbuh1hhjhhhjhMubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhhjhMubjM)}(hjPh]h*}(hjhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjhhhjhMubj)}(htty_kopen_exclusiveh]j)}(hjh]htty_kopen_exclusive}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ](jjeh"]h$]h&]hhuh1jhjhhhjhMubj)}(h(dev_t device)h]j)}(h dev_t deviceh](h)}(hhh]j)}(hdev_th]hdev_t}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj modnameN classnameNj0j3)}j6]jc.tty_kopen_exclusiveasbuh1hhjubj)}(h h]h }(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubj)}(hdeviceh]hdevice}(hj3hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubah}(h]h ]h"]h$]h&]hhuh1jhjhhhjhMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjhhhjhMubah}(h]j}ah ](jjeh"]h$]h&]jj)jhuh1jhjhMhjhhubj)}(hhh]h)}(hopen a tty device for kernelh]hopen a tty device for kernel}(hj]hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjZhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhMubeh}(h]h ](j*functioneh"]h$]h&]jj*jjujjujjjuh1jhhhjchNhNubj)}(hX**Parameters** ``dev_t device`` dev_t of device to open **Description** Opens tty exclusively for kernel. Performs the driver lookup, makes sure it's not already opened and performs the first-time tty initialization. Claims the global ``tty_mutex`` to serialize: * concurrent first-time tty initialization * concurrent tty driver removal w/ lookup * concurrent tty removal from driver table **Return** the locked initialized :c:type:`tty_struct`h](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj}ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjyubj)}(hhh]j)}(h)``dev_t device`` dev_t of device to open h](j)}(h``dev_t device``h]j)}(hjh]h dev_t device}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubj)}(hhh]h)}(hdev_t of device to openh]hdev_t of device to open}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhMhjubah}(h]h ]h"]h$]h&]uh1jhjyubh)}(h**Description**h]j)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjyubh)}(hOpens tty exclusively for kernel. Performs the driver lookup, makes sure it's not already opened and performs the first-time tty initialization.h]hOpens tty exclusively for kernel. Performs the driver lookup, makes sure it’s not already opened and performs the first-time tty initialization.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjyubj)}(hhh]j)}(hClaims the global ``tty_mutex`` to serialize: * concurrent first-time tty initialization * concurrent tty driver removal w/ lookup * concurrent tty removal from driver table h](j)}(h-Claims the global ``tty_mutex`` to serialize:h](hClaims the global }(hjhhhNhNubj)}(h ``tty_mutex``h]h tty_mutex}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh to serialize:}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubj)}(hhh]h)}(hhh](h)}(h(concurrent first-time tty initializationh]h)}(hj.h]h(concurrent first-time tty initialization}(hj0hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhj,ubah}(h]h ]h"]h$]h&]uh1hhj)ubh)}(h'concurrent tty driver removal w/ lookuph]h)}(hjFh]h'concurrent tty driver removal w/ lookup}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjDubah}(h]h ]h"]h$]h&]uh1hhj)ubh)}(h)concurrent tty removal from driver table h]h)}(h(concurrent tty removal from driver tableh]h(concurrent tty removal from driver table}(hj`hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj%hMhj\ubah}(h]h ]h"]h$]h&]uh1hhj)ubeh}(h]h ]h"]h$]h&]bulletjPuh1hhj=hMhj&ubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhj%hMhjubah}(h]h ]h"]h$]h&]uh1jhjyubh)}(h **Return**h]j)}(hjh]hReturn}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjyubh)}(h+the locked initialized :c:type:`tty_struct`h](hthe locked initialized }(hjhhhNhNubh)}(h:c:type:`tty_struct`h]j)}(hjh]h tty_struct}(hjhhhNhNubah}(h]h ](xrefj*c-typeeh"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]refdocdriver-api/tty/tty_internals refdomainj*reftypetype refexplicitrefwarnj0j3)}j6]sb reftarget tty_structuh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubeh}(h]h ]h"]h$]h&]uh1hhjhMhjyubeh}(h]h ] kernelindentah"]h$]h&]uh1jhjchhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_kopen_shared (C function)c.tty_kopen_sharedhNtauh1jhjchhhNhNubj)}(hhh](j)}(h3struct tty_struct * tty_kopen_shared (dev_t device)h]j)}(h1struct tty_struct *tty_kopen_shared(dev_t device)h](j)}(hjh]hstruct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhhjhMubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j9)}j,tty_kopen_sharedsbc.tty_kopen_sharedasbuh1hhjhhhjhMubj)}(h h]h }(hj9hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhhjhMubjM)}(hjPh]h*}(hjGhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjhhhjhMubj)}(htty_kopen_sharedh]j)}(hj6h]htty_kopen_shared}(hjXhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubah}(h]h ](jjeh"]h$]h&]hhuh1jhjhhhjhMubj)}(h(dev_t device)h]j)}(h dev_t deviceh](h)}(hhh]j)}(hdev_th]hdev_t}(hjvhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjsubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjxmodnameN classnameNj0j3)}j6]j4c.tty_kopen_sharedasbuh1hhjoubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjoubj)}(hdeviceh]hdevice}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjoubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjkubah}(h]h ]h"]h$]h&]hhuh1jhjhhhjhMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjhhhjhMubah}(h]jah ](jjeh"]h$]h&]jj)jhuh1jhjhMhjhhubj)}(hhh]h)}(h*open a tty device for shared in-kernel useh]h*open a tty device for shared in-kernel use}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhMubeh}(h]h ](j*functioneh"]h$]h&]jj*jjjjjjjuh1jhhhjchNhNubj)}(h**Parameters** ``dev_t device`` dev_t of device to open **Description** Opens an already existing tty for in-kernel use. Compared to tty_kopen_exclusive() above it doesn't ensure to be the only user. Locking: identical to tty_kopen() above.h](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubj)}(hhh]j)}(h)``dev_t device`` dev_t of device to open h](j)}(h``dev_t device``h]j)}(hj h]h dev_t device}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubj)}(hhh]h)}(hdev_t of device to openh]hdev_t of device to open}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj"hMhj#ubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhj"hMhjubah}(h]h ]h"]h$]h&]uh1jhjubh)}(h**Description**h]j)}(hjHh]h Description}(hjJhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjFubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubh)}(hOpens an already existing tty for in-kernel use. Compared to tty_kopen_exclusive() above it doesn't ensure to be the only user.h]hOpens an already existing tty for in-kernel use. Compared to tty_kopen_exclusive() above it doesn’t ensure to be the only user.}(hj^hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubh)}(h(Locking: identical to tty_kopen() above.h]h(Locking: identical to tty_kopen() above.}(hjmhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:14: ./drivers/tty/tty_io.chMhjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhjchhhNhNubeh}(h]jah ]h"]kopenah$]h&]uh1hhhhhhhhK ubh transition)}(h----h]h}(h]h ]h"]h$]h&]uh1jhhhKhhhhubh)}(hhh](h)}(hExported Internal Functionsh]hExported Internal Functions}(hjhhhNhNubah}(h]h ]h"]h$]h&]jtjuh1hhjhhhhhKubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j#tty_dev_name_to_number (C function)c.tty_dev_name_to_numberhNtauh1jhjhhhNhNubj)}(hhh](j)}(h h]hstruct tty_struct *tty}(hj@ hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj< ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chMmhj8 ubj)}(hhh]h)}(h tty deviceh]h tty device}(hjW hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjS hMmhjT ubah}(h]h ]h"]h$]h&]uh1jhj8 ubeh}(h]h ]h"]h$]h&]uh1jhjS hMmhj5 ubj)}(h``int idx`` index of the tty h](j)}(h ``int idx``h]j)}(hjw h]hint idx}(hjy hhhNhNubah}(h]h ]h"]h$]h&]uh1jhju ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chMnhjq ubj)}(hhh]h)}(hindex of the ttyh]hindex of the tty}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hMnhj ubah}(h]h ]h"]h$]h&]uh1jhjq ubeh}(h]h ]h"]h$]h&]uh1jhj hMnhj5 ubeh}(h]h ]h"]h$]h&]uh1jhj ubh)}(h**Description**h]j)}(hj h]h Description}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chMphj ubh)}(hgPerforms the final steps to release and free a tty device. It is roughly the reverse of tty_init_dev().h]hgPerforms the final steps to release and free a tty device. It is roughly the reverse of tty_init_dev().}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chMohj ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhjhhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_get_icount (C function)c.tty_get_icounthNtauh1jhjhhhNhNubj)}(hhh](j)}(hRint tty_get_icount (struct tty_struct *tty, struct serial_icounter_struct *icount)h]j)}(hQint tty_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount)h](j)}(hinth]hint}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM ubj)}(h h]h }(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj hhhj hM ubj)}(htty_get_icounth]j)}(htty_get_icounth]htty_get_icount}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj hhhj hM ubj)}(h?(struct tty_struct *tty, struct serial_icounter_struct *icount)h](j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hj4 hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj0 ubj)}(h h]h }(hjA hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj0 ubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjR hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjO ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjT modnameN classnameNj0j3)}j6]j9)}j,j sbc.tty_get_icountasbuh1hhj0 ubj)}(h h]h }(hjr hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj0 ubjM)}(hjPh]h*}(hj hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj0 ubj)}(httyh]htty}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj0 ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj, ubj)}(h%struct serial_icounter_struct *icounth](j)}(hjh]hstruct}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubj)}(h h]h }(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubh)}(hhh]j)}(hserial_icounter_structh]hserial_icounter_struct}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj modnameN classnameNj0j3)}j6]jn c.tty_get_icountasbuh1hhj ubj)}(h h]h }(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubjM)}(hjPh]h*}(hj hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj ubj)}(hicounth]hicount}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj, ubeh}(h]h ]h"]h$]h&]hhuh1jhj hhhj hM ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj hhhj hM ubah}(h]j ah ](jjeh"]h$]h&]jj)jhuh1jhj hM hj hhubj)}(hhh]h)}(hget tty statisticsh]hget tty statistics}(hj' hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hj$ hhubah}(h]h ]h"]h$]h&]uh1jhj hhhj hM ubeh}(h]h ](j*functioneh"]h$]h&]jj*jj? jj? jjjuh1jhhhjhNhNubj)}(h**Parameters** ``struct tty_struct *tty`` tty device ``struct serial_icounter_struct *icount`` output parameter **Description** Gets a copy of the **tty**'s icount statistics. Locking: none (up to the driver)h](h)}(h**Parameters**h]j)}(hjI h]h Parameters}(hjK hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjG ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hjC ubj)}(hhh](j)}(h&``struct tty_struct *tty`` tty device h](j)}(h``struct tty_struct *tty``h]j)}(hjh h]hstruct tty_struct *tty}(hjj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjf ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hjb ubj)}(hhh]h)}(h tty deviceh]h tty device}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj} hM hj~ ubah}(h]h ]h"]h$]h&]uh1jhjb ubeh}(h]h ]h"]h$]h&]uh1jhj} hM hj_ ubj)}(h;``struct serial_icounter_struct *icount`` output parameter h](j)}(h)``struct serial_icounter_struct *icount``h]j)}(hj h]h%struct serial_icounter_struct *icount}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hj ubj)}(hhh]h)}(houtput parameterh]houtput parameter}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hM hj ubah}(h]h ]h"]h$]h&]uh1jhj ubeh}(h]h ]h"]h$]h&]uh1jhj hM hj_ ubeh}(h]h ]h"]h$]h&]uh1jhjC ubh)}(h**Description**h]j)}(hj h]h Description}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hjC ubh)}(h/Gets a copy of the **tty**'s icount statistics.h](hGets a copy of the }(hj hhhNhNubj)}(h**tty**h]htty}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj ubh’s icount statistics.}(hj hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hjC ubh)}(h Locking: none (up to the driver)h]h Locking: none (up to the driver)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:22: ./drivers/tty/tty_io.chM hjC ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhjhhhNhNubeh}(h]j$ah ]h"]exported internal functionsah$]h&]uh1hhhhhhhhKubj)}(h----h]h}(h]h ]h"]h$]h&]uh1jhhhKhhhhubh)}(hhh](h)}(hInternal Functionsh]hInternal Functions}(hj=hhhNhNubah}(h]h ]h"]h$]h&]jtj@uh1hhj:hhhhhKubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jfree_tty_struct (C function)c.free_tty_structhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h-void free_tty_struct (struct tty_struct *tty)h]j)}(h,void free_tty_struct(struct tty_struct *tty)h](j)}(hvoidh]hvoid}(hjdhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj`hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKubj)}(h h]h }(hjshhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj`hhhjrhKubj)}(hfree_tty_structh]j)}(hfree_tty_structh]hfree_tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ](jjeh"]h$]h&]hhuh1jhj`hhhjrhKubj)}(h(struct tty_struct *tty)h]j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j9)}j,jsbc.free_tty_structasbuh1hhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubjM)}(hjPh]h*}(hjhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjubj)}(httyh]htty}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubah}(h]h ]h"]h$]h&]hhuh1jhj`hhhjrhKubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj\hhhjrhKubah}(h]jWah ](jjeh"]h$]h&]jj)jhuh1jhjrhKhjYhhubj)}(hhh]h)}(hfree a disused ttyh]hfree a disused tty}(hj$hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhj!hhubah}(h]h ]h"]h$]h&]uh1jhjYhhhjrhKubeh}(h]h ](j*functioneh"]h$]h&]jj*jj<jj<jjjuh1jhhhj:hNhNubj)}(h**Parameters** ``struct tty_struct *tty`` tty struct to free **Description** Free the write buffers, tty queue and tty memory itself. Locking: none. Must be called after tty is definitely unusedh](h)}(h**Parameters**h]j)}(hjFh]h Parameters}(hjHhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjDubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhj@ubj)}(hhh]j)}(h.``struct tty_struct *tty`` tty struct to free h](j)}(h``struct tty_struct *tty``h]j)}(hjeh]hstruct tty_struct *tty}(hjghhhNhNubah}(h]h ]h"]h$]h&]uh1jhjcubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhj_ubj)}(hhh]h)}(htty struct to freeh]htty struct to free}(hj~hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjzhKhj{ubah}(h]h ]h"]h$]h&]uh1jhj_ubeh}(h]h ]h"]h$]h&]uh1jhjzhKhj\ubah}(h]h ]h"]h$]h&]uh1jhj@ubh)}(h**Description**h]j)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhj@ubh)}(h8Free the write buffers, tty queue and tty memory itself.h]h8Free the write buffers, tty queue and tty memory itself.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhj@ubh)}(hhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-ubh)}(hhh]j)}(hfileh]hfile}(hjOhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjLubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjQmodnameN classnameNj0j3)}j6]j9)}j,jsbc.tty_free_fileasbuh1hhj-ubj)}(h h]h }(hjohhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-ubjM)}(hjPh]h*}(hj}hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj-ubj)}(hfileh]hfile}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj)ubah}(h]h ]h"]h$]h&]hhuh1jhjhhhjhKubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjhhhjhKubah}(h]jah ](jjeh"]h$]h&]jj)jhuh1jhjhKhjhhubj)}(hhh]h)}(hfree file->private_datah]hfree file->private_data}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjhhubah}(h]h ]h"]h$]h&]uh1jhjhhhjhKubeh}(h]h ](j*functioneh"]h$]h&]jj*jjjjjjjuh1jhhhj:hNhNubj)}(h**Parameters** ``struct file *file`` to free private_data of **Description** This shall be used only for fail path handling when tty_add_file was not called yet.h](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubj)}(hhh]j)}(h.``struct file *file`` to free private_data of h](j)}(h``struct file *file``h]j)}(hjh]hstruct file *file}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubj)}(hhh]h)}(hto free private_data ofh]hto free private_data of}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj hKhj ubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhj hKhjubah}(h]h ]h"]h$]h&]uh1jhjubh)}(h**Description**h]j)}(hj0h]h Description}(hj2hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj.ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubh)}(hTThis shall be used only for fail path handling when tty_add_file was not called yet.h]hTThis shall be used only for fail path handling when tty_add_file was not called yet.}(hjFhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jget_tty_driver (C function)c.get_tty_driverhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h=struct tty_driver * get_tty_driver (dev_t device, int *index)h]j)}(h;struct tty_driver *get_tty_driver(dev_t device, int *index)h](j)}(hjh]hstruct}(hjuhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjqhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM)ubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjqhhhjhM)ubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j9)}j,get_tty_driversbc.get_tty_driverasbuh1hhjqhhhjhM)ubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjqhhhjhM)ubjM)}(hjPh]h*}(hjhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjqhhhjhM)ubj)}(hget_tty_driverh]j)}(hjh]hget_tty_driver}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ](jjeh"]h$]h&]hhuh1jhjqhhhjhM)ubj)}(h(dev_t device, int *index)h](j)}(h dev_t deviceh](h)}(hhh]j)}(hdev_th]hdev_t}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]jc.get_tty_driverasbuh1hhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubj)}(hdeviceh]hdevice}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubj)}(h int *indexh](j)}(hinth]hint}(hj7hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj3ubj)}(h h]h }(hjEhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj3ubjM)}(hjPh]h*}(hjShhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj3ubj)}(hindexh]hindex}(hj`hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj3ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubeh}(h]h ]h"]h$]h&]hhuh1jhjqhhhjhM)ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjmhhhjhM)ubah}(h]jhah ](jjeh"]h$]h&]jj)jhuh1jhjhM)hjjhhubj)}(hhh]h)}(hfind device of a ttyh]hfind device of a tty}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM)hjhhubah}(h]h ]h"]h$]h&]uh1jhjjhhhjhM)ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjjjjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``dev_t device`` device identifier ``int *index`` returns the index of the tty **Description** This routine returns a tty driver structure, given a device number and also passes back the index number. Locking: caller must hold tty_mutexh](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM-hjubj)}(hhh](j)}(h#``dev_t device`` device identifier h](j)}(h``dev_t device``h]j)}(hjh]h dev_t device}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM*hjubj)}(hhh]h)}(hdevice identifierh]hdevice identifier}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM*hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM*hjubj)}(h,``int *index`` returns the index of the tty h](j)}(h``int *index``h]j)}(hjh]h int *index}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM+hjubj)}(hhh]h)}(hreturns the index of the ttyh]hreturns the index of the tty}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM+hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM+hjubeh}(h]h ]h"]h$]h&]uh1jhjubh)}(h**Description**h]j)}(hj?h]h Description}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj=ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM-hjubh)}(hiThis routine returns a tty driver structure, given a device number and also passes back the index number.h]hiThis routine returns a tty driver structure, given a device number and also passes back the index number.}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM,hjubh)}(h#Locking: caller must hold tty_mutexh]h#Locking: caller must hold tty_mutex}(hjdhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM/hjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h 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is available to the pty code so if the master closes, if the slave is a redirect it can release the redirect.h](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjubj)}(hhh]j)}(h&``struct tty_struct *tty`` tty device h](j)}(h``struct tty_struct *tty``h]j)}(hjh]hstruct tty_struct *tty}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjubj)}(hhh]h)}(h tty deviceh]h tty device}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM hjubah}(h]h ]h"]h$]h&]uh1jhjubh)}(h**Description**h]j)}(hj h]h Description}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjubh)}(hrThis is available to the pty code so if the master closes, if the slave is a redirect it can release the redirect.h]hrThis is available to the pty code so if the master closes, if the slave is a redirect it can release the redirect.}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j__tty_hangup (C function)c.__tty_hanguphNtauh1jhj:hhhNhNubj)}(hhh](j)}(hsiglock to protect ->signal/->sighandh](h)}(h**Parameters**h]j)}(hjfh]h Parameters}(hjhhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjdubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM$hj`ubj)}(hhh](j)}(h&``struct tty_struct *tty`` tty device h](j)}(h``struct tty_struct *tty``h]j)}(hjh]hstruct tty_struct *tty}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM!hjubj)}(hhh]h)}(h tty deviceh]h tty device}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM!hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM!hj|ubj)}(hH``int exit_session`` if non-zero, signal all foreground group processes h](j)}(h``int exit_session``h]j)}(hjh]hint exit_session}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM"hjubj)}(hhh]h)}(h2if non-zero, signal all foreground group processesh]h2if non-zero, signal all foreground group processes}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM"hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM"hj|ubeh}(h]h ]h"]h$]h&]uh1jhj`ubh)}(h**Description**h]j)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM$hj`ubh)}(hThis can be called by a "kworker" kernel thread. That is process synchronous but doesn't hold any locks, so we need to make sure we have the appropriate locks for what we're doing.h]hThis can be called by a “kworker” kernel thread. That is process synchronous but doesn’t hold any locks, so we need to make sure we have the appropriate locks for what we’re doing.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM#hj`ubh)}(hThe hangup event clears any pending redirections onto the hung up device. It ensures future writes will error and it does the needed line discipline hangup and signal delivery. The tty object itself remains intact.h]hThe hangup event clears any pending redirections onto the hung up device. It ensures future writes will error and it does the needed line discipline hangup and signal delivery. The tty object itself remains intact.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM'hj`ubj)}(hhh]j)}(hXLocking: * BTM * redirect lock for undoing redirection * file list lock for manipulating list of ttys * tty_ldiscs_lock from called functions * termios_rwsem resetting termios data * tasklist_lock to walk task list for hangup event * ->siglock to protect ->signal/->sighandh](j)}(hLocking:h]hLocking:}(hj4hhhNhNubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM3hj0ubj)}(hhh](h)}(hhh]h)}(hBTM h]h)}(hBTMh]hBTM}(hjMhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM,hjIubah}(h]h ]h"]h$]h&]uh1hhjFubah}(h]h ]h"]h$]h&]jzjPuh1hhj[hM,hjCubh block_quote)}(hX* redirect lock for undoing redirection * file list lock for manipulating list of ttys * tty_ldiscs_lock from called functions * termios_rwsem resetting termios data * tasklist_lock to walk task list for hangup event * ->siglock to protect ->signal/->sighandh](h)}(hhh](h)}(h%redirect lock for undoing redirectionh]h)}(hjsh]h%redirect lock for undoing redirection}(hjuhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM.hjqubah}(h]h ]h"]h$]h&]uh1hhjnubh)}(h,file list lock for manipulating list of ttysh]h)}(hjh]h,file list lock for manipulating list of ttys}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM/hjubah}(h]h ]h"]h$]h&]uh1hhjnubh)}(h%tty_ldiscs_lock from called functionsh]h)}(hjh]h%tty_ldiscs_lock from called functions}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM0hjubah}(h]h ]h"]h$]h&]uh1hhjnubh)}(h$termios_rwsem 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for own ctty}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjhhubah}(h]h ]h"]h$]h&]uh1jhjHhhhjahMubeh}(h]h ](j*functioneh"]h$]h&]jj*jjjjjjjuh1jhhhj:hNhNubj)}(hj**Parameters** ``void`` no arguments **Description** Perform a vhangup on the current controlling ttyh](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjubj)}(hhh]j)}(h``void`` no arguments h](j)}(h``void``h]j)}(hjh]hvoid}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubj)}(hhh]h)}(h no argumentsh]h no arguments}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhKhjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhKhjubah}(h]h ]h"]h$]h&]uh1jhjubh)}(h**Description**h]j)}(hj6h]h Description}(hj8hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj4ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chKhjubh)}(h0Perform a vhangup on the current controlling ttyh]h0Perform a vhangup on the current controlling tty}(hjLhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j tty_vhangup_session (C function)c.tty_vhangup_sessionhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h1void tty_vhangup_session (struct tty_struct *tty)h]j)}(h0void tty_vhangup_session(struct tty_struct *tty)h](j)}(hvoidh]hvoid}(hj{hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjwhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjwhhhjhMubj)}(htty_vhangup_sessionh]j)}(htty_vhangup_sessionh]htty_vhangup_session}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ](jjeh"]h$]h&]hhuh1jhjwhhhjhMubj)}(h(struct tty_struct *tty)h]j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j9)}j,jsbc.tty_vhangup_sessionasbuh1hhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubjM)}(hjPh]h*}(hjhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjubj)}(httyh]htty}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjubah}(h]h ]h"]h$]h&]hhuh1jhjwhhhjhMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjshhhjhMubah}(h]jnah ](jjeh"]h$]h&]jj)jhuh1jhjhMhjphhubj)}(hhh]h)}(hhangup session leader exith]hhangup session leader exit}(hj;hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj8hhubah}(h]h ]h"]h$]h&]uh1jhjphhhjhMubeh}(h]h ](j*functioneh"]h$]h&]jj*jjSjjSjjjuh1jhhhj:hNhNubj)}(hX`**Parameters** ``struct tty_struct *tty`` tty to hangup **Description** The session leader is exiting and hanging up its controlling terminal. Every process in the foreground process group is signalled ``SIGHUP``. We do this synchronously so that when the syscall returns the process is complete. That guarantee is necessary for security reasons.h](h)}(h**Parameters**h]j)}(hj]h]h Parameters}(hj_hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj[ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjWubj)}(hhh]j)}(h)``struct tty_struct *tty`` tty to hangup h](j)}(h``struct tty_struct *tty``h]j)}(hj|h]hstruct tty_struct *tty}(hj~hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjzubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjvubj)}(hhh]h)}(h tty to hanguph]h tty to hangup}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhMhjubah}(h]h ]h"]h$]h&]uh1jhjvubeh}(h]h ]h"]h$]h&]uh1jhjhMhjsubah}(h]h ]h"]h$]h&]uh1jhjWubh)}(h**Description**h]j)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjWubh)}(hThe session leader is exiting and hanging up its controlling terminal. Every process in the foreground process group is signalled ``SIGHUP``.h](hThe session leader is exiting and hanging up its controlling terminal. Every process in the foreground process group is signalled }(hjhhhNhNubj)}(h ``SIGHUP``h]hSIGHUP}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubh.}(hjhhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjWubh)}(hWe do this synchronously so that when the syscall returns the process is complete. That guarantee is necessary for security reasons.h]hWe do this synchronously so that when the syscall returns the process is complete. That guarantee is necessary for security reasons.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjWubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_read (C function) c.tty_readhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h:ssize_t tty_read (struct kiocb *iocb, struct iov_iter *to)h]j)}(h9ssize_t tty_read(struct kiocb *iocb, struct iov_iter *to)h](h)}(hhh]j)}(hssize_th]hssize_t}(hj hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj"modnameN classnameNj0j3)}j6]j9)}j,tty_readsb c.tty_readasbuh1hhjhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM|ubj)}(h h]h }(hjBhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjhhhjAhM|ubj)}(htty_readh]j)}(hj>h]htty_read}(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubah}(h]h ](jjeh"]h$]h&]hhuh1jhjhhhjAhM|ubj)}(h)(struct kiocb *iocb, struct iov_iter *to)h](j)}(hstruct kiocb *iocbh](j)}(hjh]hstruct}(hjohhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjkubj)}(h h]h }(hj|hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjkubh)}(hhh]j)}(hkiocbh]hkiocb}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j< c.tty_readasbuh1hhjkubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjkubjM)}(hjPh]h*}(hjhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjkubj)}(hiocbh]hiocb}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjkubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjgubj)}(hstruct iov_iter *toh](j)}(hjh]hstruct}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubh)}(hhh]j)}(hiov_iterh]hiov_iter}(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjmodnameN classnameNj0j3)}j6]j< c.tty_readasbuh1hhjubj)}(h h]h }(hjhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubjM)}(hjPh]h*}(hj)hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjubj)}(htoh]hto}(hj6hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjgubeh}(h]h ]h"]h$]h&]hhuh1jhjhhhjAhM|ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjhhhjAhM|ubah}(h]jah ](jjeh"]h$]h&]jj)jhuh1jhjAhM|hjhhubj)}(hhh]h)}(h read method for tty device filesh]h read method for tty device files}(hj`hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM|hj]hhubah}(h]h ]h"]h$]h&]uh1jhjhhhjAhM|ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjxjjxjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct kiocb *iocb`` kernel I/O control block ``struct iov_iter *to`` destination for the data read **Description** Perform the read system call function on this terminal device. Checks for hung up devices before calling the line discipline method. Locking: Locks the line discipline internally while needed. Multiple read calls may be outstanding in parallel.h](h)}(h**Parameters**h]j)}(hjh]h Parameters}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj|ubj)}(hhh](j)}(h0``struct kiocb *iocb`` kernel I/O control block h](j)}(h``struct kiocb *iocb``h]j)}(hjh]hstruct kiocb *iocb}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM}hjubj)}(hhh]h)}(hkernel I/O control blockh]hkernel I/O control block}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM}hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM}hjubj)}(h6``struct iov_iter *to`` destination for the data read h](j)}(h``struct iov_iter *to``h]j)}(hjh]hstruct iov_iter *to}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM~hjubj)}(hhh]h)}(hdestination for the data readh]hdestination for the data read}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjhM~hjubah}(h]h ]h"]h$]h&]uh1jhjubeh}(h]h ]h"]h$]h&]uh1jhjhM~hjubeh}(h]h ]h"]h$]h&]uh1jhj|ubh)}(h**Description**h]j)}(hjh]h Description}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj|ubh)}(hPerform the read system call function on this terminal device. Checks for hung up devices before calling the line discipline method.h]hPerform the read system call function on this terminal device. Checks for hung up devices before calling the line discipline method.}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj|ubj)}(hhh]j)}(hoLocking: Locks the line discipline internally while needed. Multiple read calls may be outstanding in parallel.h](j)}(hLocking:h]hLocking:}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj=ubj)}(hhh]h)}(hfLocks the line discipline internally while needed. Multiple read calls may be outstanding in parallel.h]hfLocks the line discipline internally while needed. Multiple read calls may be outstanding in parallel.}(hjShhhNhNubah}(h]h ]h"]h$]h&]uh1hhjOhMhjPubah}(h]h ]h"]h$]h&]uh1jhj=ubeh}(h]h ]h"]h$]h&]uh1jhjOhMhj:ubah}(h]h ]h"]h$]h&]uh1jhj|ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_write (C function) c.tty_writehNtauh1jhj:hhhNhNubj)}(hhh](j)}(h=ssize_t tty_write (struct kiocb *iocb, struct iov_iter *from)h]j)}(h"sbc.pty_line_nameasbuh1hhjT"ubj)}(h h]h }(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjT"ubjM)}(hjPh]h*}(hj"hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjT"ubj)}(hdriverh]hdriver}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjT"ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjP"ubj)}(h int indexh](j)}(hinth]hint}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubj)}(h h]h }(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubj)}(hindexh]hindex}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjP"ubj)}(hchar *ph](j)}(hcharh]hchar}(hj"hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubj)}(h h]h }(hj #hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubjM)}(hjPh]h*}(hj#hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj"ubj)}(hjYh]hp}(hj(#hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj"ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjP"ubeh}(h]h ]h"]h$]h&]hhuh1jhj"hhhj)"hMrubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj"hhhj)"hMrubah}(h]j"ah ](jjeh"]h$]h&]jj)jhuh1jhj)"hMrhj"hhubj)}(hhh]h)}(hgenerate name for a ptyh]hgenerate name for a pty}(hjQ#hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMrhjN#hhubah}(h]h ]h"]h$]h&]uh1jhj"hhhj)"hMrubeh}(h]h ](j*functioneh"]h$]h&]jj*jji#jji#jjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct tty_driver *driver`` the tty driver in use ``int index`` the minor number ``char *p`` output buffer of at least 6 bytes **Description** Generate a name from a **driver** reference and write it to the output buffer **p**. Locking: Noneh](h)}(h**Parameters**h]j)}(hjs#h]h Parameters}(hju#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjq#ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMvhjm#ubj)}(hhh](j)}(h4``struct tty_driver *driver`` the tty driver in use h](j)}(h``struct tty_driver *driver``h]j)}(hj#h]hstruct tty_driver *driver}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj#ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMshj#ubj)}(hhh]h)}(hthe tty driver in useh]hthe tty driver in use}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj#hMshj#ubah}(h]h ]h"]h$]h&]uh1jhj#ubeh}(h]h ]h"]h$]h&]uh1jhj#hMshj#ubj)}(h``int index`` the minor number h](j)}(h ``int index``h]j)}(hj#h]h int index}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj#ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMthj#ubj)}(hhh]h)}(hthe minor numberh]hthe minor number}(hj#hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj#hMthj#ubah}(h]h ]h"]h$]h&]uh1jhj#ubeh}(h]h ]h"]h$]h&]uh1jhj#hMthj#ubj)}(h.``char *p`` output buffer of at least 6 bytes h](j)}(h ``char *p``h]j)}(hj$h]hchar *p}(hj$hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj$ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMuhj#ubj)}(hhh]h)}(h!output buffer of at least 6 bytesh]h!output buffer of at least 6 bytes}(hj$hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj$hMuhj$ubah}(h]h ]h"]h$]h&]uh1jhj#ubeh}(h]h ]h"]h$]h&]uh1jhj$hMuhj#ubeh}(h]h ]h"]h$]h&]uh1jhjm#ubh)}(h**Description**h]j)}(hj?$h]h Description}(hjA$hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj=$ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMwhjm#ubh)}(hTGenerate a name from a **driver** reference and write it to the output buffer **p**.h](hGenerate a name from a }(hjU$hhhNhNubj)}(h **driver**h]hdriver}(hj]$hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjU$ubh- reference and write it to the output buffer }(hjU$hhhNhNubj)}(h**p**h]hp}(hjo$hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjU$ubh.}(hjU$hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMvhjm#ubh)}(h Locking: Noneh]h Locking: None}(hj$hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMyhjm#ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_line_name (C function)c.tty_line_namehNtauh1jhj:hhhNhNubj)}(hhh](j)}(hEssize_t tty_line_name (struct tty_driver *driver, int index, char *p)h]j)}(hDssize_t tty_line_name(struct tty_driver *driver, int index, char *p)h](h)}(hhh]j)}(hssize_th]hssize_t}(hj$hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj$ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj$modnameN classnameNj0j3)}j6]j9)}j, tty_line_namesbc.tty_line_nameasbuh1hhj$hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hj$hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj$hhhj$hMubj)}(h tty_line_nameh]j)}(hj$h]h tty_line_name}(hj$hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj$ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj$hhhj$hMubj)}(h/(struct tty_driver *driver, int index, char *p)h](j)}(hstruct tty_driver *driverh](j)}(hjh]hstruct}(hj %hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubj)}(h h]h }(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hj'%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj$%ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj)%modnameN classnameNj0j3)}j6]j$c.tty_line_nameasbuh1hhj%ubj)}(h h]h }(hjE%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubjM)}(hjPh]h*}(hjS%hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj%ubj)}(hdriverh]hdriver}(hj`%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj%ubj)}(h int indexh](j)}(hinth]hint}(hjy%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhju%ubj)}(h h]h }(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhju%ubj)}(hindexh]hindex}(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhju%ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj%ubj)}(hchar *ph](j)}(hcharh]hchar}(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubj)}(h h]h }(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubjM)}(hjPh]h*}(hj%hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj%ubj)}(hjYh]hp}(hj%hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj%ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj%ubeh}(h]h ]h"]h$]h&]hhuh1jhj$hhhj$hMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj$hhhj$hMubah}(h]j$ah ](jjeh"]h$]h&]jj)jhuh1jhj$hMhj$hhubj)}(hhh]h)}(hgenerate name for a ttyh]hgenerate name for a tty}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj%hhubah}(h]h ]h"]h$]h&]uh1jhj$hhhj$hMubeh}(h]h ](j*functioneh"]h$]h&]jj*jj&jj&jjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct tty_driver *driver`` the tty driver in use ``int index`` the minor number ``char *p`` output buffer of at least 7 bytes **Description** Generate a name from a **driver** reference and write it to the output buffer **p**. Locking: Noneh](h)}(h**Parameters**h]j)}(hj"&h]h Parameters}(hj$&hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj &ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj&ubj)}(hhh](j)}(h4``struct tty_driver *driver`` the tty driver in use h](j)}(h``struct tty_driver *driver``h]j)}(hjA&h]hstruct tty_driver *driver}(hjC&hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj?&ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj;&ubj)}(hhh]h)}(hthe tty driver in useh]hthe tty driver in use}(hjZ&hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjV&hMhjW&ubah}(h]h ]h"]h$]h&]uh1jhj;&ubeh}(h]h ]h"]h$]h&]uh1jhjV&hMhj8&ubj)}(h``int index`` the minor number h](j)}(h ``int index``h]j)}(hjz&h]h int index}(hj|&hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjx&ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjt&ubj)}(hhh]h)}(hthe minor numberh]hthe minor number}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj&hMhj&ubah}(h]h ]h"]h$]h&]uh1jhjt&ubeh}(h]h ]h"]h$]h&]uh1jhj&hMhj8&ubj)}(h.``char *p`` output buffer of at least 7 bytes h](j)}(h ``char *p``h]j)}(hj&h]hchar *p}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj&ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj&ubj)}(hhh]h)}(h!output buffer of at least 7 bytesh]h!output buffer of at least 7 bytes}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj&hMhj&ubah}(h]h ]h"]h$]h&]uh1jhj&ubeh}(h]h ]h"]h$]h&]uh1jhj&hMhj8&ubeh}(h]h ]h"]h$]h&]uh1jhj&ubh)}(h**Description**h]j)}(hj&h]h Description}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj&ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj&ubh)}(hTGenerate a name from a **driver** reference and write it to the output buffer **p**.h](hGenerate a name from a }(hj'hhhNhNubj)}(h **driver**h]hdriver}(hj 'hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj'ubh- reference and write it to the output buffer }(hj'hhhNhNubj)}(h**p**h]hp}(hj'hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj'ubh.}(hj'hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj&ubh)}(h Locking: Noneh]h Locking: None}(hj7'hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj&ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j"tty_driver_lookup_tty (C function)c.tty_driver_lookup_ttyhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hastruct tty_struct * tty_driver_lookup_tty (struct tty_driver *driver, struct file *file, int idx)h]j)}(h_struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver, struct file *file, int idx)h](j)}(hjh]hstruct}(hjf'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjb'hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hjt'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjb'hhhjs'hMubh)}(hhh]j)}(h tty_structh]h tty_struct}(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj'modnameN classnameNj0j3)}j6]j9)}j,tty_driver_lookup_ttysbc.tty_driver_lookup_ttyasbuh1hhjb'hhhjs'hMubj)}(h h]h }(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjb'hhhjs'hMubjM)}(hjPh]h*}(hj'hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjb'hhhjs'hMubj)}(htty_driver_lookup_ttyh]j)}(hj'h]htty_driver_lookup_tty}(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubah}(h]h ](jjeh"]h$]h&]hhuh1jhjb'hhhjs'hMubj)}(h7(struct tty_driver *driver, struct file *file, int idx)h](j)}(hstruct tty_driver *driverh](j)}(hjh]hstruct}(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubj)}(h h]h }(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hj'hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj(modnameN classnameNj0j3)}j6]j'c.tty_driver_lookup_ttyasbuh1hhj'ubj)}(h h]h }(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubjM)}(hjPh]h*}(hj*(hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj'ubj)}(hdriverh]hdriver}(hj7(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj'ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj'ubj)}(hstruct file *fileh](j)}(hjh]hstruct}(hjP(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjL(ubj)}(h h]h }(hj](hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjL(ubh)}(hhh]j)}(hfileh]hfile}(hjn(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjk(ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjp(modnameN classnameNj0j3)}j6]j'c.tty_driver_lookup_ttyasbuh1hhjL(ubj)}(h h]h }(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjL(ubjM)}(hjPh]h*}(hj(hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjL(ubj)}(hfileh]hfile}(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjL(ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj'ubj)}(hint idxh](j)}(hinth]hint}(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj(ubj)}(h h]h }(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj(ubj)}(hidxh]hidx}(hj(hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj(ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj'ubeh}(h]h ]h"]h$]h&]hhuh1jhjb'hhhjs'hMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj^'hhhjs'hMubah}(h]jY'ah ](jjeh"]h$]h&]jj)jhuh1jhjs'hMhj['hhubj)}(hhh]h)}(hfind an existing tty, if anyh]hfind an existing tty, if any}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj)hhubah}(h]h ]h"]h$]h&]uh1jhj['hhhjs'hMubeh}(h]h ](j*functioneh"]h$]h&]jj*jj)jj)jjjuh1jhhhj:hNhNubj)}(hXa**Parameters** ``struct tty_driver *driver`` the driver for the tty ``struct file *file`` file object ``int idx`` the minor number **Return** the tty, if found. If not found, return ``NULL`` or ERR_PTR() if the driver lookup() method returns an error. **Description** Locking: tty_mutex must be held. If the tty is found, bump the tty kref.h](h)}(h**Parameters**h]j)}(hj()h]h Parameters}(hj*)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj&)ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj")ubj)}(hhh](j)}(h5``struct tty_driver *driver`` the driver for the tty h](j)}(h``struct tty_driver *driver``h]j)}(hjG)h]hstruct tty_driver *driver}(hjI)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjE)ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjA)ubj)}(hhh]h)}(hthe driver for the ttyh]hthe driver for the tty}(hj`)hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj\)hMhj])ubah}(h]h ]h"]h$]h&]uh1jhjA)ubeh}(h]h ]h"]h$]h&]uh1jhj\)hMhj>)ubj)}(h"``struct file *file`` file object h](j)}(h``struct file *file``h]j)}(hj)h]hstruct file *file}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj~)ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjz)ubj)}(hhh]h)}(h file objecth]h file object}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj)hMhj)ubah}(h]h ]h"]h$]h&]uh1jhjz)ubeh}(h]h ]h"]h$]h&]uh1jhj)hMhj>)ubj)}(h``int idx`` the minor number h](j)}(h ``int idx``h]j)}(hj)h]hint idx}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj)ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj)ubj)}(hhh]h)}(hthe minor numberh]hthe minor number}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj)hMhj)ubah}(h]h ]h"]h$]h&]uh1jhj)ubeh}(h]h ]h"]h$]h&]uh1jhj)hMhj>)ubeh}(h]h ]h"]h$]h&]uh1jhj")ubh)}(h **Return**h]j)}(hj)h]hReturn}(hj)hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj)ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj")ubh)}(hmthe tty, if found. If not found, return ``NULL`` or ERR_PTR() if the driver lookup() method returns an error.h](h(the tty, if found. If not found, return }(hj *hhhNhNubj)}(h``NULL``h]hNULL}(hj*hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj *ubh= or ERR_PTR() if the driver lookup() method returns an error.}(hj *hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj")ubh)}(h**Description**h]j)}(hj-*h]h Description}(hj/*hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj+*ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj")ubh)}(hHLocking: tty_mutex must be held. If the tty is found, bump the tty kref.h]hHLocking: tty_mutex must be held. If the tty is found, bump the tty kref.}(hjC*hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj")ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j#tty_driver_install_tty (C function)c.tty_driver_install_ttyhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hNint tty_driver_install_tty (struct tty_driver *driver, struct tty_struct *tty)h]j)}(hMint tty_driver_install_tty(struct tty_driver *driver, struct tty_struct *tty)h](j)}(hinth]hint}(hjr*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjn*hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjn*hhhj*hMubj)}(htty_driver_install_ttyh]j)}(htty_driver_install_ttyh]htty_driver_install_tty}(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubah}(h]h ](jjeh"]h$]h&]hhuh1jhjn*hhhj*hMubj)}(h3(struct tty_driver *driver, struct tty_struct *tty)h](j)}(hstruct tty_driver *driverh](j)}(hjh]hstruct}(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubj)}(h h]h }(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj*modnameN classnameNj0j3)}j6]j9)}j,j*sbc.tty_driver_install_ttyasbuh1hhj*ubj)}(h h]h }(hj*hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubjM)}(hjPh]h*}(hj*hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj*ubj)}(hdriverh]hdriver}(hj+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj*ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj*ubj)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hj!+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj+ubj)}(h h]h }(hj.+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj+ubh)}(hhh]j)}(h tty_structh]h tty_struct}(hj?+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj<+ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjA+modnameN classnameNj0j3)}j6]j*c.tty_driver_install_ttyasbuh1hhj+ubj)}(h h]h }(hj]+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj+ubjM)}(hjPh]h*}(hjk+hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj+ubj)}(httyh]htty}(hjx+hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj+ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj*ubeh}(h]h ]h"]h$]h&]hhuh1jhjn*hhhj*hMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjj*hhhj*hMubah}(h]je*ah ](jjeh"]h$]h&]jj)jhuh1jhj*hMhjg*hhubj)}(hhh]h)}(h!install a tty entry in the driverh]h!install a tty entry in the driver}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+hhubah}(h]h ]h"]h$]h&]uh1jhjg*hhhj*hMubeh}(h]h ](j*functioneh"]h$]h&]jj*jj+jj+jjjuh1jhhhj:hNhNubj)}(hXm**Parameters** ``struct tty_driver *driver`` the driver for the tty ``struct tty_struct *tty`` the tty **Description** Install a tty object into the driver tables. The **tty->index** field will be set by the time this is called. This method is responsible for ensuring any need additional structures are allocated and configured. Locking: tty_mutex for nowh](h)}(h**Parameters**h]j)}(hj+h]h Parameters}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj+ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+ubj)}(hhh](j)}(h5``struct tty_driver *driver`` the driver for the tty h](j)}(h``struct tty_driver *driver``h]j)}(hj+h]hstruct tty_driver *driver}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj+ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+ubj)}(hhh]h)}(hthe driver for the ttyh]hthe driver for the tty}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj+hMhj+ubah}(h]h ]h"]h$]h&]uh1jhj+ubeh}(h]h ]h"]h$]h&]uh1jhj+hMhj+ubj)}(h#``struct tty_struct *tty`` the tty h](j)}(h``struct tty_struct *tty``h]j)}(hj,h]hstruct tty_struct *tty}(hj,hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj,ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj,ubj)}(hhh]h)}(hthe ttyh]hthe tty}(hj5,hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj1,hMhj2,ubah}(h]h ]h"]h$]h&]uh1jhj,ubeh}(h]h ]h"]h$]h&]uh1jhj1,hMhj+ubeh}(h]h ]h"]h$]h&]uh1jhj+ubh)}(h**Description**h]j)}(hjW,h]h Description}(hjY,hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjU,ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+ubh)}(hInstall a tty object into the driver tables. The **tty->index** field will be set by the time this is called. This method is responsible for ensuring any need additional structures are allocated and configured.h](h1Install a tty object into the driver tables. The }(hjm,hhhNhNubj)}(h**tty->index**h]h tty->index}(hju,hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjm,ubh field will be set by the time this is called. This method is responsible for ensuring any need additional structures are allocated and configured.}(hjm,hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+ubh)}(hLocking: tty_mutex for nowh]hLocking: tty_mutex for now}(hj,hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj+ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](j"tty_driver_remove_tty (C function)c.tty_driver_remove_ttyhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hNvoid tty_driver_remove_tty (struct tty_driver *driver, struct tty_struct *tty)h]j)}(hMvoid tty_driver_remove_tty(struct tty_driver *driver, struct tty_struct *tty)h](j)}(hvoidh]hvoid}(hj,hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hj,hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,hhhj,hMubj)}(htty_driver_remove_ttyh]j)}(htty_driver_remove_ttyh]htty_driver_remove_tty}(hj,hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj,hhhj,hMubj)}(h3(struct tty_driver *driver, struct tty_struct *tty)h](j)}(hstruct tty_driver *driverh](j)}(hjh]hstruct}(hj,hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,ubj)}(h h]h }(hj-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,ubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hj-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj-modnameN classnameNj0j3)}j6]j9)}j,j,sbc.tty_driver_remove_ttyasbuh1hhj,ubj)}(h h]h }(hj8-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,ubjM)}(hjPh]h*}(hjF-hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj,ubj)}(hdriverh]hdriver}(hjS-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj,ubj)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hjl-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjh-ubj)}(h h]h }(hjy-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjh-ubh)}(hhh]j)}(h tty_structh]h tty_struct}(hj-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj-modnameN classnameNj0j3)}j6]j4-c.tty_driver_remove_ttyasbuh1hhjh-ubj)}(h h]h }(hj-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjh-ubjM)}(hjPh]h*}(hj-hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjh-ubj)}(httyh]htty}(hj-hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjh-ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj,ubeh}(h]h ]h"]h$]h&]hhuh1jhj,hhhj,hMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj,hhhj,hMubah}(h]j,ah ](jjeh"]h$]h&]jj)jhuh1jhj,hMhj,hhubj)}(hhh]h)}(h#remove a tty from the driver tablesh]h#remove a tty from the driver tables}(hj-hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj-hhubah}(h]h ]h"]h$]h&]uh1jhj,hhhj,hMubeh}(h]h ](j*functioneh"]h$]h&]jj*jj.jj.jjjuh1jhhhj:hNhNubj)}(hX **Parameters** ``struct tty_driver *driver`` the driver for the tty ``struct tty_struct *tty`` tty to remove **Description** Remove a tty object from the driver tables. The tty->index field will be set by the time this is called. Locking: tty_mutex for nowh](h)}(h**Parameters**h]j)}(hj.h]h Parameters}(hj.hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj .ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj .ubj)}(hhh](j)}(h5``struct tty_driver *driver`` the driver for the tty h](j)}(h``struct tty_driver *driver``h]j)}(hj..h]hstruct tty_driver *driver}(hj0.hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj,.ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj(.ubj)}(hhh]h)}(hthe driver for the ttyh]hthe driver for the tty}(hjG.hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjC.hMhjD.ubah}(h]h ]h"]h$]h&]uh1jhj(.ubeh}(h]h ]h"]h$]h&]uh1jhjC.hMhj%.ubj)}(h)``struct tty_struct *tty`` tty to remove h](j)}(h``struct tty_struct *tty``h]j)}(hjg.h]hstruct tty_struct *tty}(hji.hhhNhNubah}(h]h ]h"]h$]h&]uh1jhje.ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhja.ubj)}(hhh]h)}(h tty to removeh]h tty to remove}(hj.hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj|.hMhj}.ubah}(h]h ]h"]h$]h&]uh1jhja.ubeh}(h]h ]h"]h$]h&]uh1jhj|.hMhj%.ubeh}(h]h ]h"]h$]h&]uh1jhj .ubh)}(h**Description**h]j)}(hj.h]h Description}(hj.hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj.ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj .ubh)}(hhRemove a tty object from the driver tables. The tty->index field will be set by the time this is called.h]hhRemove a tty object from the driver tables. The tty->index field will be set by the time this is called.}(hj.hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj .ubh)}(hLocking: tty_mutex for nowh]hLocking: tty_mutex for now}(hj.hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj .ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_reopen (C function) c.tty_reopenhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h'int tty_reopen (struct tty_struct *tty)h]j)}(h&int tty_reopen(struct tty_struct *tty)h](j)}(hinth]hint}(hj.hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj.hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM ubj)}(h h]h }(hj/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj.hhhj/hM ubj)}(h tty_reopenh]j)}(h tty_reopenh]h tty_reopen}(hj/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj/ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj.hhhj/hM ubj)}(h(struct tty_struct *tty)h]j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hj3/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj//ubj)}(h h]h }(hj@/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj//ubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjQ/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjN/ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjS/modnameN classnameNj0j3)}j6]j9)}j,j/sb c.tty_reopenasbuh1hhj//ubj)}(h h]h }(hjq/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj//ubjM)}(hjPh]h*}(hj/hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj//ubj)}(httyh]htty}(hj/hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj//ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj+/ubah}(h]h ]h"]h$]h&]hhuh1jhj.hhhj/hM ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj.hhhj/hM ubah}(h]j.ah ](jjeh"]h$]h&]jj)jhuh1jhj/hM hj.hhubj)}(hhh]h)}(hfast re-open of an open ttyh]hfast re-open of an open tty}(hj/hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hj/hhubah}(h]h ]h"]h$]h&]uh1jhj.hhhj/hM ubeh}(h]h ](j*functioneh"]h$]h&]jj*jj/jj/jjjuh1jhhhj:hNhNubj)}(h**Parameters** ``struct tty_struct *tty`` the tty to open **Description** Re-opens on master ptys are not allowed and return -``EIO``. Locking: Caller must hold tty_lock **Return** 0 on success, -errno on error.h](h)}(h**Parameters**h]j)}(hj/h]h Parameters}(hj/hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj/ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj/ubj)}(hhh]j)}(h+``struct tty_struct *tty`` the tty to open h](j)}(h``struct tty_struct *tty``h]j)}(hj/h]hstruct tty_struct *tty}(hj/hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj/ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj/ubj)}(hhh]h)}(hthe tty to openh]hthe tty to open}(hj0hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj 0hMhj 0ubah}(h]h ]h"]h$]h&]uh1jhj/ubeh}(h]h ]h"]h$]h&]uh1jhj 0hMhj/ubah}(h]h ]h"]h$]h&]uh1jhj/ubh)}(h**Description**h]j)}(hj20h]h Description}(hj40hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj00ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj/ubh)}(hhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj>ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj>modnameN classnameNj0j3)}j6]j=c.tty_open_current_ttyasbuh1hhj >ubj)}(h h]h }(hj/>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj >ubj)}(hdeviceh]hdevice}(hj=>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj >ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj>ubj)}(hstruct file *filph](j)}(hjh]hstruct}(hjV>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjR>ubj)}(h h]h }(hjc>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjR>ubh)}(hhh]j)}(hfileh]hfile}(hjt>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjq>ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjv>modnameN classnameNj0j3)}j6]j=c.tty_open_current_ttyasbuh1hhjR>ubj)}(h h]h }(hj>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjR>ubjM)}(hjPh]h*}(hj>hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjR>ubj)}(hfilph]hfilp}(hj>hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjR>ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj>ubeh}(h]h ]h"]h$]h&]hhuh1jhj=hhhj=hM(ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj=hhhj=hM(ubah}(h]j=ah ](jjeh"]h$]h&]jj)jhuh1jhj=hM(hj=hhubj)}(hhh]h)}(hget locked tty of current taskh]hget locked tty of current task}(hj>hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM(hj>hhubah}(h]h ]h"]h$]h&]uh1jhj=hhhj=hM(ubeh}(h]h ](j*functioneh"]h$]h&]jj*jj>jj>jjjuh1jhhhj:hNhNubj)}(hXw**Parameters** ``dev_t device`` device number ``struct file *filp`` file pointer to tty **Return** locked tty of the current task iff **device** is /dev/tty **Description** Performs a re-open of the current task's controlling tty. We cannot return driver and index like for the other nodes because devpts will not work then. It expects inodes to be from devpts FS.h](h)}(h**Parameters**h]j)}(hj>h]h Parameters}(hj>hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj>ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM,hj>ubj)}(hhh](j)}(h``dev_t device`` device number h](j)}(h``dev_t device``h]j)}(hj?h]h dev_t device}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj?ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM)hj?ubj)}(hhh]h)}(h device numberh]h device number}(hj1?hhhNhNubah}(h]h ]h"]h$]h&]uh1hhj-?hM)hj.?ubah}(h]h ]h"]h$]h&]uh1jhj?ubeh}(h]h ]h"]h$]h&]uh1jhj-?hM)hj?ubj)}(h*``struct file *filp`` file pointer to tty h](j)}(h``struct file *filp``h]j)}(hjQ?h]hstruct file *filp}(hjS?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhjO?ubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM*hjK?ubj)}(hhh]h)}(hfile pointer to ttyh]hfile pointer to tty}(hjj?hhhNhNubah}(h]h ]h"]h$]h&]uh1hhjf?hM*hjg?ubah}(h]h ]h"]h$]h&]uh1jhjK?ubeh}(h]h ]h"]h$]h&]uh1jhjf?hM*hj?ubeh}(h]h ]h"]h$]h&]uh1jhj>ubh)}(h **Return**h]j)}(hj?h]hReturn}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj?ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM,hj>ubh)}(h9locked tty of the current task iff **device** is /dev/ttyh](h#locked tty of the current task iff }(hj?hhhNhNubj)}(h **device**h]hdevice}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj?ubh is /dev/tty}(hj?hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM+hj>ubh)}(h**Description**h]j)}(hj?h]h Description}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj?ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM-hj>ubh)}(h9Performs a re-open of the current task's controlling tty.h]h;Performs a re-open of the current task’s controlling tty.}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM,hj>ubh)}(hWe cannot return driver and index like for the other nodes because devpts will not work then. It expects inodes to be from devpts FS.h]hWe cannot return driver and index like for the other nodes because devpts will not work then. It expects inodes to be from devpts FS.}(hj?hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM.hj>ubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_lookup_driver (C function)c.tty_lookup_driverhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hSstruct tty_driver * tty_lookup_driver (dev_t device, struct file *filp, int *index)h]j)}(hQstruct tty_driver *tty_lookup_driver(dev_t device, struct file *filp, int *index)h](j)}(hjh]hstruct}(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMLubj)}(h h]h }(hj'@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@hhhj&@hMLubh)}(hhh]j)}(h tty_driverh]h tty_driver}(hj8@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj5@ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj:@modnameN classnameNj0j3)}j6]j9)}j,tty_lookup_driversbc.tty_lookup_driverasbuh1hhj@hhhj&@hMLubj)}(h h]h }(hjY@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@hhhj&@hMLubjM)}(hjPh]h*}(hjg@hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj@hhhj&@hMLubj)}(htty_lookup_driverh]j)}(hjV@h]htty_lookup_driver}(hjx@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjt@ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj@hhhj&@hMLubj)}(h-(dev_t device, struct file *filp, int *index)h](j)}(h dev_t deviceh](h)}(hhh]j)}(hdev_th]hdev_t}(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj@modnameN classnameNj0j3)}j6]jT@c.tty_lookup_driverasbuh1hhj@ubj)}(h h]h }(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubj)}(hdeviceh]hdevice}(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj@ubj)}(hstruct file *filph](j)}(hjh]hstruct}(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubj)}(h h]h }(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubh)}(hhh]j)}(hfileh]hfile}(hj@hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj@modnameN classnameNj0j3)}j6]jT@c.tty_lookup_driverasbuh1hhj@ubj)}(h h]h }(hjAhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubjM)}(hjPh]h*}(hj%AhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj@ubj)}(hfilph]hfilp}(hj2AhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj@ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj@ubj)}(h int *indexh](j)}(hinth]hint}(hjKAhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjGAubj)}(h h]h }(hjYAhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjGAubjM)}(hjPh]h*}(hjgAhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjGAubj)}(hindexh]hindex}(hjtAhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjGAubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj@ubeh}(h]h ]h"]h$]h&]hhuh1jhj@hhhj&@hMLubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj@hhhj&@hMLubah}(h]j @ah ](jjeh"]h$]h&]jj)jhuh1jhj&@hMLhj@hhubj)}(hhh]h)}(h+lookup a tty driver for a given device fileh]h+lookup a tty driver for a given device file}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMLhjAhhubah}(h]h ]h"]h$]h&]uh1jhj@hhhj&@hMLubeh}(h]h ](j*functioneh"]h$]h&]jj*jjAjjAjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``dev_t device`` device number ``struct file *filp`` file pointer to tty ``int *index`` index for the device in the **return** driver **Description** If returned value is not erroneous, the caller is responsible to decrement the refcount by tty_driver_kref_put(). Locking: ``tty_mutex`` protects get_tty_driver() **Return** driver for this inode (with increased refcount)h](h)}(h**Parameters**h]j)}(hjAh]h Parameters}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjAubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMPhjAubj)}(hhh](j)}(h``dev_t device`` device number h](j)}(h``dev_t device``h]j)}(hjAh]h dev_t device}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjAubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMMhjAubj)}(hhh]h)}(h device numberh]h device number}(hjAhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjAhMMhjAubah}(h]h ]h"]h$]h&]uh1jhjAubeh}(h]h ]h"]h$]h&]uh1jhjAhMMhjAubj)}(h*``struct file *filp`` file pointer to tty h](j)}(h``struct file *filp``h]j)}(hjBh]hstruct file *filp}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjBubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMNhjBubj)}(hhh]h)}(hfile pointer to ttyh]hfile pointer to tty}(hj1BhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj-BhMNhj.Bubah}(h]h ]h"]h$]h&]uh1jhjBubeh}(h]h ]h"]h$]h&]uh1jhj-BhMNhjAubj)}(h=``int *index`` index for the device in the **return** driver h](j)}(h``int *index``h]j)}(hjQBh]h int *index}(hjSBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjOBubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMOhjKBubj)}(hhh]h)}(h-index for the device in the **return** driverh](hindex for the device in the }(hjjBhhhNhNubj)}(h **return**h]hreturn}(hjrBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjjBubh driver}(hjjBhhhNhNubeh}(h]h ]h"]h$]h&]uh1hhjfBhMOhjgBubah}(h]h ]h"]h$]h&]uh1jhjKBubeh}(h]h ]h"]h$]h&]uh1jhjfBhMOhjAubeh}(h]h ]h"]h$]h&]uh1jhjAubh)}(h**Description**h]j)}(hjBh]h Description}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjBubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMQhjAubh)}(hqIf returned value is not erroneous, the caller is responsible to decrement the refcount by tty_driver_kref_put().h]hqIf returned value is not erroneous, the caller is responsible to decrement the refcount by tty_driver_kref_put().}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMPhjAubh)}(h0Locking: ``tty_mutex`` protects get_tty_driver()h](h Locking: }(hjBhhhNhNubj)}(h ``tty_mutex``h]h tty_mutex}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjBubh protects get_tty_driver()}(hjBhhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMShjAubh)}(h **Return**h]j)}(hjBh]hReturn}(hjBhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjBubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMUhjAubh)}(h/driver for this inode (with increased refcount)h]h/driver for 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]jah"]h$]h&]uh1jhjCubjM)}(hjPh]h*}(hj7DhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjCubj)}(hfilph]hfilp}(hjDDhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjCubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjCubeh}(h]h ]h"]h$]h&]hhuh1jhj'Chhhj8ChMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj#Chhhj8ChMubah}(h]jCah ](jjeh"]h$]h&]jj)jhuh1jhj8ChMhj Chhubj)}(hhh]h)}(hopen a tty deviceh]hopen a tty device}(hjnDhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjkDhhubah}(h]h ]h"]h$]h&]uh1jhj Chhhj8ChMubeh}(h]h ](j*functioneh"]h$]h&]jj*jjDjjDjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``dev_t device`` dev_t of device to open ``struct file *filp`` file pointer to tty **Description** Performs the driver lookup, checks for a reopen, or otherwise performs the first-time tty initialization. Claims the global tty_mutex to serialize: * concurrent first-time tty initialization * concurrent tty driver removal w/ lookup * concurrent tty removal from driver table **Return** the locked initialized or re-opened :c:type:`tty_struct`h](h)}(h**Parameters**h]j)}(hjDh]h Parameters}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjDubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjDubj)}(hhh](j)}(h)``dev_t device`` dev_t of device to open h](j)}(h``dev_t device``h]j)}(hjDh]h dev_t device}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjDubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjDubj)}(hhh]h)}(hdev_t of device to openh]hdev_t of device to open}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjDhMhjDubah}(h]h ]h"]h$]h&]uh1jhjDubeh}(h]h ]h"]h$]h&]uh1jhjDhMhjDubj)}(h*``struct file *filp`` file pointer to tty h](j)}(h``struct file *filp``h]j)}(hjDh]hstruct file 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Does the necessary locking and input management. FIXME: does not honour flow control ?? Locking: * Called functions take tty_ldiscs_lock * current->signal->tty check is safe without locksh](h)}(h**Parameters**h]j)}(hjLh]h Parameters}(hjLhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjLubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjLubj)}(hhh](j)}(h2``struct tty_struct *tty`` tty to fake input into h](j)}(h``struct tty_struct *tty``h]j)}(hjLh]hstruct tty_struct *tty}(hjLhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjLubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjLubj)}(hhh]h)}(htty to fake input intoh]htty to fake input into}(hjLhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjLhMhjLubah}(h]h ]h"]h$]h&]uh1jhjLubeh}(h]h ]h"]h$]h&]uh1jhjLhMhjLubj)}(h&``u8 __user *p`` pointer to character h](j)}(h``u8 __user *p``h]j)}(hjMh]h u8 __user *p}(hjMhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjMubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj Mubj)}(hhh]h)}(hpointer to characterh]hpointer to character}(hj)MhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj%MhMhj&Mubah}(h]h ]h"]h$]h&]uh1jhj Mubeh}(h]h ]h"]h$]h&]uh1jhj%MhMhjLubeh}(h]h ]h"]h$]h&]uh1jhjLubh)}(h**Description**h]j)}(hjKMh]h Description}(hjMMhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjIMubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjLubh)}(hLFake input to a tty device. Does the necessary locking and input management.h]hLFake input to a tty device. Does the necessary locking and input management.}(hjaMhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjLubh)}(h&FIXME: does not honour flow control ??h]h&FIXME: does not honour flow control ??}(hjpMhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjLubj)}(hhh]j)}(hcLocking: * Called functions take tty_ldiscs_lock * current->signal->tty check is safe without locksh](j)}(hLocking:h]hLocking:}(hjMhhhNhNubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjMubj)}(hhh]h)}(hhh](h)}(h%Called functions take tty_ldiscs_lockh]h)}(hjMh]h%Called functions take tty_ldiscs_lock}(hjMhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjMhMhjMubah}(h]h ]h"]h$]h&]uh1hhjMubh)}(h0current->signal->tty check is safe without locksh]h)}(hjMh]h0current->signal->tty check is safe without locks}(hjMhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjMubah}(h]h ]h"]h$]h&]uh1hhjMubeh}(h]h ]h"]h$]h&]jzjPuh1hhjMhMhjMubah}(h]h ]h"]h$]h&]uh1jhjMubeh}(h]h ]h"]h$]h&]uh1jhjMhMhjMubah}(h]h ]h"]h$]h&]uh1jhjLubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtiocgwinsz (C function) c.tiocgwinszhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hCint tiocgwinsz (struct tty_struct *tty, struct winsize __user *arg)h]j)}(hBint tiocgwinsz(struct tty_struct *tty, struct winsize __user *arg)h](j)}(hinth]hint}(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjMhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMubj)}(h h]h }(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjMhhhjNhMubj)}(h tiocgwinszh]j)}(h tiocgwinszh]h tiocgwinsz}(hj#NhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubah}(h]h ](jjeh"]h$]h&]hhuh1jhjMhhhjNhMubj)}(h4(struct tty_struct *tty, struct winsize __user *arg)h](j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hj?NhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj;Nubj)}(h h]h }(hjLNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj;Nubh)}(hhh]j)}(h tty_structh]h tty_struct}(hj]NhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjZNubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj_NmodnameN classnameNj0j3)}j6]j9)}j,j%Nsb c.tiocgwinszasbuh1hhj;Nubj)}(h h]h }(hj}NhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj;NubjM)}(hjPh]h*}(hjNhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj;Nubj)}(httyh]htty}(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj;Nubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj7Nubj)}(hstruct winsize __user *argh](j)}(hjh]hstruct}(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubj)}(h h]h }(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubh)}(hhh]j)}(hwinsizeh]hwinsize}(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjNmodnameN classnameNj0j3)}j6]jyN c.tiocgwinszasbuh1hhjNubj)}(h h]h }(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubh__user}(hjNhhhNhNubj)}(h h]h }(hjNhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubjM)}(hjPh]h*}(hj OhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjNubj)}(hargh]harg}(hjOhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjNubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj7Nubeh}(h]h ]h"]h$]h&]hhuh1jhjMhhhjNhMubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjMhhhjNhMubah}(h]jMah ](jjeh"]h$]h&]jj)jhuh1jhjNhMhjMhhubj)}(hhh]h)}(himplement window query ioctlh]himplement window query ioctl}(hjDOhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjAOhhubah}(h]h ]h"]h$]h&]uh1jhjMhhhjNhMubeh}(h]h ](j*functioneh"]h$]h&]jj*jj\Ojj\Ojjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct tty_struct *tty`` tty ``struct winsize __user *arg`` user buffer for result **Description** Copies the kernel idea of the window size into the user buffer. Locking: **tty->winsize_mutex** is taken to ensure the winsize data is consistent.h](h)}(h**Parameters**h]j)}(hjfOh]h Parameters}(hjhOhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjdOubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj`Oubj)}(hhh](j)}(h``struct tty_struct *tty`` tty h](j)}(h``struct tty_struct *tty``h]j)}(hjOh]hstruct tty_struct *tty}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjOubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjOubj)}(hhh]h)}(httyh]htty}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjOhMhjOubah}(h]h ]h"]h$]h&]uh1jhjOubeh}(h]h ]h"]h$]h&]uh1jhjOhMhj|Oubj)}(h6``struct winsize __user *arg`` user buffer for result h](j)}(h``struct winsize __user *arg``h]j)}(hjOh]hstruct winsize __user *arg}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjOubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhjOubj)}(hhh]h)}(huser buffer for resulth]huser buffer for result}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjOhMhjOubah}(h]h ]h"]h$]h&]uh1jhjOubeh}(h]h ]h"]h$]h&]uh1jhjOhMhj|Oubeh}(h]h ]h"]h$]h&]uh1jhj`Oubh)}(h**Description**h]j)}(hjOh]h Description}(hjOhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjOubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj`Oubh)}(h?Copies the kernel idea of the window size into the user buffer.h]h?Copies the kernel idea of the window size into the user buffer.}(hjPhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj`Oubh)}(hRLocking: **tty->winsize_mutex** is taken to ensure the winsize data is consistent.h](h Locking: }(hjPhhhNhNubj)}(h**tty->winsize_mutex**h]htty->winsize_mutex}(hj&PhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjPubh3 is taken to ensure the winsize data is consistent.}(hjPhhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMhj`Oubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtiocswinsz (C function) c.tiocswinszhNtauh1jhj:hhhNhNubj)}(hhh](j)}(hCint tiocswinsz (struct tty_struct *tty, struct winsize __user *arg)h]j)}(hBint tiocswinsz(struct tty_struct *tty, struct winsize __user *arg)h](j)}(hinth]hint}(hj_PhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[Phhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM ubj)}(h h]h }(hjnPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[PhhhjmPhM ubj)}(h tiocswinszh]j)}(h tiocswinszh]h tiocswinsz}(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj|Pubah}(h]h ](jjeh"]h$]h&]hhuh1jhj[PhhhjmPhM ubj)}(h4(struct tty_struct *tty, struct winsize __user *arg)h](j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubj)}(h h]h }(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjPmodnameN classnameNj0j3)}j6]j9)}j,jPsb c.tiocswinszasbuh1hhjPubj)}(h h]h }(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubjM)}(hjPh]h*}(hjPhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjPubj)}(httyh]htty}(hjPhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjPubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjPubj)}(hstruct winsize __user *argh](j)}(hjh]hstruct}(hjQhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj Qubj)}(h h]h }(hjQhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj Qubh)}(hhh]j)}(hwinsizeh]hwinsize}(hj,QhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj)Qubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj.QmodnameN classnameNj0j3)}j6]jP c.tiocswinszasbuh1hhj Qubj)}(h h]h }(hjJQhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj Qubh__user}(hj QhhhNhNubj)}(h h]h }(hj\QhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj QubjM)}(hjPh]h*}(hjjQhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj Qubj)}(hargh]harg}(hjwQhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj Qubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjPubeh}(h]h ]h"]h$]h&]hhuh1jhj[PhhhjmPhM ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjWPhhhjmPhM ubah}(h]jRPah ](jjeh"]h$]h&]jj)jhuh1jhjmPhM hjTPhhubj)}(hhh]h)}(himplement window size set ioctlh]himplement window size set ioctl}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjQhhubah}(h]h ]h"]h$]h&]uh1jhjTPhhhjmPhM ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjQjjQjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct tty_struct *tty`` tty side of tty ``struct winsize __user *arg`` user buffer for result **Description** Copies the user idea of the window size to the kernel. Traditionally this is just advisory information but for the Linux console it actually has driver level meaning and triggers a VC resize. Locking: Driver dependent. The default do_resize method takes the tty termios mutex and ctrl.lock. The console takes its own lock then calls into the default method.h](h)}(h**Parameters**h]j)}(hjQh]h Parameters}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjQubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjQubj)}(hhh](j)}(h+``struct tty_struct *tty`` tty side of tty h](j)}(h``struct tty_struct *tty``h]j)}(hjQh]hstruct tty_struct *tty}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjQubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjQubj)}(hhh]h)}(htty side of ttyh]htty side of tty}(hjQhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjQhM hjQubah}(h]h ]h"]h$]h&]uh1jhjQubeh}(h]h ]h"]h$]h&]uh1jhjQhM hjQubj)}(h6``struct winsize __user *arg`` user buffer for result h](j)}(h``struct winsize __user *arg``h]j)}(hjRh]hstruct winsize __user *arg}(hjRhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjRubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjRubj)}(hhh]h)}(huser buffer for resulth]huser buffer for result}(hj4RhhhNhNubah}(h]h ]h"]h$]h&]uh1hhj0RhM hj1Rubah}(h]h ]h"]h$]h&]uh1jhjRubeh}(h]h ]h"]h$]h&]uh1jhj0RhM hjQubeh}(h]h ]h"]h$]h&]uh1jhjQubh)}(h**Description**h]j)}(hjVRh]h Description}(hjXRhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjTRubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjQubh)}(hCopies the user idea of the window size to the kernel. 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The console takes its own lock then calls into the default method.h]hDriver dependent. The default do_resize method takes the tty termios mutex and ctrl.lock. The console takes its own lock then calls into the default method.}(hjRhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjRubah}(h]h ]h"]h$]h&]uh1jhj~Rubeh}(h]h ]h"]h$]h&]uh1jhjRhM hj{Rubah}(h]h ]h"]h$]h&]uh1jhjQubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtioccons (C function) c.tiocconshNtauh1jhj:hhhNhNubj)}(hhh](j)}(h int tioccons (struct file *file)h]j)}(hint tioccons(struct file *file)h](j)}(hinth]hint}(hjRhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjRhhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM, ubj)}(h h]h }(hjRhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjRhhhjRhM, ubj)}(htiocconsh]j)}(htiocconsh]htioccons}(hjRhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjRubah}(h]h ](jjeh"]h$]h&]hhuh1jhjRhhhjRhM, ubj)}(h(struct file *file)h]j)}(hstruct file *fileh](j)}(hjh]hstruct}(hjShhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjSubj)}(h h]h }(hjShhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjSubh)}(hhh]j)}(hfileh]hfile}(hj0ShhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj-Subah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj2SmodnameN classnameNj0j3)}j6]j9)}j,jRsb c.tiocconsasbuh1hhjSubj)}(h h]h }(hjPShhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjSubjM)}(hjPh]h*}(hj^ShhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjSubj)}(hfileh]hfile}(hjkShhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjSubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj Subah}(h]h ]h"]h$]h&]hhuh1jhjRhhhjRhM, ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjRhhhjRhM, ubah}(h]jRah ](jjeh"]h$]h&]jj)jhuh1jhjRhM, hjRhhubj)}(hhh]h)}(h#allow admin to move logical consoleh]h#allow admin to move logical console}(hjShhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM, hjShhubah}(h]h ]h"]h$]h&]uh1jhjRhhhjRhM, ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjSjjSjjjuh1jhhhj:hNhNubj)}(h**Parameters** ``struct file *file`` the file to become console **Description** Allow the administrator to move the redirected console device. Locking: uses redirect_lock to guard the redirect informationh](h)}(h**Parameters**h]j)}(hjSh]h Parameters}(hjShhhNhNubah}(h]h ]h"]h$]h&]uh1jhjSubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM0 hjSubj)}(hhh]j)}(h1``struct file *file`` the file to become console h](j)}(h``struct file *file``h]j)}(hjSh]hstruct file *file}(hjShhhNhNubah}(h]h ]h"]h$]h&]uh1jhjSubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM- hjSubj)}(hhh]h)}(hthe file to become consoleh]hthe file to become console}(hjShhhNhNubah}(h]h ]h"]h$]h&]uh1hhjShM- hjSubah}(h]h ]h"]h$]h&]uh1jhjSubeh}(h]h ]h"]h$]h&]uh1jhjShM- hjSubah}(h]h ]h"]h$]h&]uh1jhjSubh)}(h**Description**h]j)}(hjTh]h Description}(hjThhhNhNubah}(h]h ]h"]h$]h&]uh1jhjTubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM/ hjSubh)}(h>Allow the administrator to move the redirected console device.h]h>Allow the administrator to move the redirected console device.}(hj'ThhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM. hjSubh)}(h=Locking: uses redirect_lock to guard the redirect informationh]h=Locking: uses redirect_lock to guard the redirect information}(hj6ThhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM0 hjSubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtiocsetd (C function) c.tiocsetdhNtauh1jhj:hhhNhNubj)}(hhh](j)}(h4int tiocsetd (struct tty_struct *tty, int __user *p)h]j)}(h3int tiocsetd(struct tty_struct *tty, int __user *p)h](j)}(hinth]hint}(hjeThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjaThhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMT ubj)}(h h]h }(hjtThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjaThhhjsThMT ubj)}(htiocsetdh]j)}(htiocsetdh]htiocsetd}(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubah}(h]h ](jjeh"]h$]h&]hhuh1jhjaThhhjsThMT ubj)}(h'(struct tty_struct *tty, int __user *p)h](j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubj)}(h h]h }(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubh)}(hhh]j)}(h tty_structh]h tty_struct}(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetjTmodnameN classnameNj0j3)}j6]j9)}j,jTsb c.tiocsetdasbuh1hhjTubj)}(h h]h }(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubjM)}(hjPh]h*}(hjThhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjTubj)}(httyh]htty}(hjThhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjTubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjTubj)}(h int __user *ph](j)}(hinth]hint}(hjUhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjUubj)}(h h]h }(hj"UhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjUubh__user}(hjUhhhNhNubj)}(h h]h }(hj4UhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjUubjM)}(hjPh]h*}(hjBUhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjUubj)}(hjYh]hp}(hjOUhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjUubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjTubeh}(h]h ]h"]h$]h&]hhuh1jhjaThhhjsThMT ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj]ThhhjsThMT ubah}(h]jXTah ](jjeh"]h$]h&]jj)jhuh1jhjsThMT hjZThhubj)}(hhh]h)}(hset line disciplineh]hset line discipline}(hjxUhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMT hjuUhhubah}(h]h ]h"]h$]h&]uh1jhjZThhhjsThMT ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjUjjUjjjuh1jhhhj:hNhNubj)}(h**Parameters** ``struct tty_struct *tty`` tty device ``int __user *p`` pointer to user data **Description** Set the line discipline according to user request. Locking: see tty_set_ldisc(), this function is just a helperh](h)}(h**Parameters**h]j)}(hjUh]h Parameters}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjUubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMX hjUubj)}(hhh](j)}(h&``struct tty_struct *tty`` tty device h](j)}(h``struct tty_struct *tty``h]j)}(hjUh]hstruct tty_struct *tty}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjUubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMU hjUubj)}(hhh]h)}(h tty deviceh]h tty device}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjUhMU hjUubah}(h]h ]h"]h$]h&]uh1jhjUubeh}(h]h ]h"]h$]h&]uh1jhjUhMU hjUubj)}(h'``int __user *p`` pointer to user data h](j)}(h``int __user *p``h]j)}(hjUh]h int __user *p}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjUubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMV hjUubj)}(hhh]h)}(hpointer to user datah]hpointer to user data}(hj VhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjVhMV hjVubah}(h]h ]h"]h$]h&]uh1jhjUubeh}(h]h ]h"]h$]h&]uh1jhjVhMV hjUubeh}(h]h ]h"]h$]h&]uh1jhjUubh)}(h**Description**h]j)}(hj-Vh]h Description}(hj/VhhhNhNubah}(h]h ]h"]h$]h&]uh1jhj+Vubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMX hjUubh)}(h2Set the line discipline according to user request.h]h2Set the line discipline according to user request.}(hjCVhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMW hjUubh)}(hWhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,Wubh__user}(hj,WhhhNhNubj)}(h h]h }(hjPWhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,WubjM)}(hjPh]h*}(hj^WhhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj,Wubj)}(hjYh]hp}(hjkWhhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj,Wubeh}(h]h ]h"]h$]h&]noemphhhuh1jhjVubeh}(h]h ]h"]h$]h&]hhuh1jhj}VhhhjVhMj ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhjyVhhhjVhMj ubah}(h]jtVah ](jjeh"]h$]h&]jj)jhuh1jhjVhMj hjvVhhubj)}(hhh]h)}(hget line disciplineh]hget line discipline}(hjWhhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chMj hjWhhubah}(h]h ]h"]h$]h&]uh1jhjvVhhhjVhMj ubeh}(h]h ](j*functioneh"]h$]h&]jj*jjWjjWjjjuh1jhhhj:hNhNubj)}(hX**Parameters** ``struct tty_struct *tty`` tty device ``int __user *p`` pointer to user data **Description** Retrieves the line discipline id directly from the ldisc. 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Locking: **tty->atomic_write_lock** serializesh](h)}(h**Parameters**h]j)}(hjRZh]h Parameters}(hjTZhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjPZubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjLZubj)}(hhh](j)}(h"``struct file *file`` file object h](j)}(h``struct file *file``h]j)}(hjqZh]hstruct file *file}(hjsZhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjoZubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjkZubj)}(hhh]h)}(h file objecth]h file object}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjZhM hjZubah}(h]h ]h"]h$]h&]uh1jhjkZubeh}(h]h ]h"]h$]h&]uh1jhjZhM hjhZubj)}(h.``struct tty_struct *tty`` device to break on h](j)}(h``struct tty_struct *tty``h]j)}(hjZh]hstruct tty_struct *tty}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjZubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjZubj)}(hhh]h)}(hdevice to break onh]hdevice to break on}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjZhM hjZubah}(h]h ]h"]h$]h&]uh1jhjZubeh}(h]h ]h"]h$]h&]uh1jhjZhM hjhZubj)}(h(``unsigned int duration`` timeout in mS h](j)}(h``unsigned int duration``h]j)}(hjZh]hunsigned int duration}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1jhjZubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjZubj)}(hhh]h)}(h timeout in mSh]h timeout in mS}(hjZhhhNhNubah}(h]h ]h"]h$]h&]uh1hhjZhM hjZubah}(h]h ]h"]h$]h&]uh1jhjZubeh}(h]h ]h"]h$]h&]uh1jhjZhM hjhZubeh}(h]h ]h"]h$]h&]uh1jhjLZubh)}(h**Description**h]j)}(hj[h]h Description}(hj [hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj[ubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjLZubh)}(h\Perform a timed break on hardware that lacks its own driver level timed break functionality.h]h\Perform a timed break on hardware that lacks its own driver level timed break functionality.}(hj4[hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjLZubj)}(hhh]j)}(h.Locking: **tty->atomic_write_lock** serializesh](j)}(hLocking:h]hLocking:}(hjJ[hhhNhNubah}(h]h ]h"]h$]h&]uh1jha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjF[ubj)}(hhh]h)}(h%**tty->atomic_write_lock** serializesh](j)}(h**tty->atomic_write_lock**h]htty->atomic_write_lock}(hj`[hhhNhNubah}(h]h ]h"]h$]h&]uh1jhj\[ubh serializes}(hj\[hhhNhNubeh}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hjY[ubah}(h]h ]h"]h$]h&]uh1jhjF[ubeh}(h]h ]h"]h$]h&]uh1jhjX[hM hjC[ubah}(h]h ]h"]h$]h&]uh1jhjLZubeh}(h]h ] kernelindentah"]h$]h&]uh1jhj:hhhNhNubj)}(hhh]h}(h]h ]h"]h$]h&]entries](jtty_tiocmget (C function)c.tty_tiocmgethNtauh1jhj:hhhNhNubj)}(hhh](j)}(h8int tty_tiocmget (struct tty_struct *tty, int __user *p)h]j)}(h7int tty_tiocmget(struct tty_struct *tty, int __user *p)h](j)}(hinth]hint}(hj[hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[hhha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM ubj)}(h h]h }(hj[hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[hhhj[hM ubj)}(h tty_tiocmgeth]j)}(h tty_tiocmgeth]h tty_tiocmget}(hj[hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[ubah}(h]h ](jjeh"]h$]h&]hhuh1jhj[hhhj[hM ubj)}(h'(struct tty_struct *tty, int __user *p)h](j)}(hstruct tty_struct *ttyh](j)}(hjh]hstruct}(hj[hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[ubj)}(h h]h }(hj[hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[ubh)}(hhh]j)}(h tty_structh]h tty_struct}(hj\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj\ubah}(h]h ]h"]h$]h&] refdomainj*reftypej, reftargetj\modnameN classnameNj0j3)}j6]j9)}j,j[sbc.tty_tiocmgetasbuh1hhj[ubj)}(h h]h }(hj&\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[ubjM)}(hjPh]h*}(hj4\hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhj[ubj)}(httyh]htty}(hjA\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhj[ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj[ubj)}(h int __user *ph](j)}(hinth]hint}(hjZ\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjV\ubj)}(h h]h }(hjh\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjV\ubh__user}(hjV\hhhNhNubj)}(h h]h }(hjz\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjV\ubjM)}(hjPh]h*}(hj\hhhNhNubah}(h]h ]jYah"]h$]h&]uh1jLhjV\ubj)}(hjYh]hp}(hj\hhhNhNubah}(h]h ]jah"]h$]h&]uh1jhjV\ubeh}(h]h ]h"]h$]h&]noemphhhuh1jhj[ubeh}(h]h ]h"]h$]h&]hhuh1jhj[hhhj[hM ubeh}(h]h ]h"]h$]h&]hhj~uh1jjjhj[hhhj[hM ubah}(h]j[ah ](jjeh"]h$]h&]jj)jhuh1jhj[hM hj[hhubj)}(hhh]h)}(hget modem statush]hget modem status}(hj\hhhNhNubah}(h]h ]h"]h$]h&]uh1hha/var/lib/git/docbuild/linux/Documentation/driver-api/tty/tty_internals:30: ./drivers/tty/tty_io.chM hj\hhubah}(h]h ]h"]h$]h&]uh1jhj[hhhj[hM ubeh}(h]h ](j*functioneh"]h$]h&]jj*jj\jj\jjjuh1jhhhj:hNhNubj)}(hX **Parameters** ``struct tty_struct *tty`` tty device ``int __user *p`` pointer to result **Description** Obtain the modem status bits from the tty driver if the feature is supported. Return -``ENOTTY`` if it is not available. 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