proc_dostring — read a string sysctl
int proc_dostring ( | struct ctl_table * table, |
| int write, | |
| void __user * buffer, | |
| size_t * lenp, | |
loff_t * ppos); |
tablethe sysctl table
write
TRUE if this is a write to the sysctl file
bufferthe user buffer
lenpthe size of the user buffer
pposfile position
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.