SYSFS
Section: Linux Programmer's Manual (2)
Updated: 9 August 1995
NAME
sysfs - get file system type information
SYNOPSIS
int sysfs(int option, const char * fsname);
int sysfs(int option, unsigned int fs_index, char * buf);
int sysfs(int option);
DESCRIPTION
sysfs
returns information about the file system types currently present in
the kernel. The specific form of the
sysfs
call and the information returned depends on the
option
in effect:
- 1
-
Translate the file-system identifier string
fsname
into a file-system type index.
- 2
-
Translate the file-system type index
fs_index
into a null-terminated file-system identifier string. This string will
be written to the buffer pointed to by
buf.
Make sure that
buf
has enough space to accept the string.
- 3
-
Return the total number of file system types currently present in the
kernel.
The numbering of the file-system type indexes begins with zero.
RETURN VALUE
On success,
sysfs
returns the file-system index for option
1,
zero for option
2,
and the number of currently configured file systems for option
3.
On error, -1 is returned, and
errno
is set appropriately.
ERRORS
- EINVAL
-
fsname
is not a valid file-system type identifier;
fs_index
is out-of-bounds;
option
is invalid.
- EFAULT
-
Either fsname or buf
is outside your accessible address space.
CONFORMING TO
SVr4.