proc_dostring (9) - Linux Manuals
proc_dostring: read a string sysctl
NAME
proc_dostring - read a string sysctl
SYNOPSIS
-
int proc_dostring(struct ctl_table
* table, intwrite, 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.
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