proc_dostring

Langue: en

Version: October 2010 (fedora - 01/12/10)

Section: 9 (Appels noyau Linux)

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

table

the sysctl table

write


TRUE if this is a write to the sysctl file

buffer

the user buffer

lenp

the size of the user buffer

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.