Name

proc_dostring — read a string sysctl

Synopsis

int proc_dostring (struct ctl_table * table,
 int write,
 void __user * buffer,
 size_t * lenp,
 loff_t * ppos);
 

Arguments

struct ctl_table * table

the sysctl table

int write

TRUE if this is a write to the sysctl file

void __user * buffer

the user buffer

size_t * lenp

the size of the user buffer

loff_t * ppos

file position

Description

Reads/writes a string from/to the user buffer. If the kernel buffer provided is not large enough to hold the string, the string is truncated. The copied string is NULL-terminated. If the string is being read by the user process, it is copied and a newline '\n' is added. It is truncated if the buffer is not large enough.

Returns 0 on success.