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 cur
rently 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 cur
rently 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 config
ured 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.
NOTE
On Linux with the proc filesystem mounted on /proc, the
same information can be derived from /proc/filesystems.
There is no libc or glibc support. There is no way to
guess how large buf should be.
Man(1) output converted with
man2html