# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.1239.1.1 -> 1.1239.1.2 # arch/ia64/ia32/sys_ia32.c 1.75 -> 1.76 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 03/09/08 arun.sharma@intel.com 1.1239.1.2 # [PATCH] ia64: MINSIGSTKSZ on ia32 # # MINSIGSTKSZ is defined differently for i386 and ia64. This patch improves # compatibility with apps which use sigaltstack(2) with sizes between # MINSIGSTKSZ_IA32 and MINSIGSTKSZ. # -------------------------------------------- # diff -Nru a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c --- a/arch/ia64/ia32/sys_ia32.c Tue Sep 9 01:04:53 2003 +++ b/arch/ia64/ia32/sys_ia32.c Tue Sep 9 01:04:53 2003 @@ -76,6 +76,7 @@ #define OFFSET4K(a) ((a) & 0xfff) #define PAGE_START(addr) ((addr) & PAGE_MASK) +#define MINSIGSTKSZ_IA32 2048 #define high2lowuid(uid) ((uid) > 65535 ? 65534 : (uid)) #define high2lowgid(gid) ((gid) > 65535 ? 65534 : (gid)) @@ -2262,10 +2263,18 @@ return -EFAULT; uss.ss_sp = (void *) (long) buf32.ss_sp; uss.ss_flags = buf32.ss_flags; - uss.ss_size = buf32.ss_size; + /* MINSIGSTKSZ is different for ia32 vs ia64. We lie here to pass the + check and set it to the user requested value later */ + if (buf32.ss_size < MINSIGSTKSZ_IA32) { + ret = -ENOMEM; + goto out; + } + uss.ss_size = MINSIGSTKSZ; set_fs(KERNEL_DS); ret = do_sigaltstack(uss32 ? &uss : NULL, &uoss, pt->r12); + current->sas_ss_size = buf32.ss_size; set_fs(old_fs); +out: if (ret < 0) return(ret); if (uoss32) {