sysfs - get filesystem type information
option, const char
option, unsigned int
Note: if you are looking for information about the
sysfs filesystem that is normally mounted at
/sys, see sysfs(5).
The (obsolete) sysfs() system call returns
information about the filesystem types currently present in the kernel.
The specific form of the sysfs() call and the
information returned depends on the
option in effect:
Translate the filesystem identifier string
fsname into a
filesystem type index.
Translate the filesystem type index
fs_index into a
null-terminated filesystem 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.
Return the total number of filesystem types currently present in the kernel.
The numbering of the filesystem type indexes begins with zero.
On success, sysfs() returns the filesystem index for
option 1, zero for option 2, and the
number of currently configured filesystems for option
3. On error, -1 is returned, and
errno is set
buf is outside your accessible
fsname is not a valid filesystem type identifier;
fs_index is out-of-bounds;
option is invalid.
This System-V derived system call is obsolete; don't use it. On
/proc, the same information can be obtained via
/proc; use that interface instead.
There is no libc or glibc support. There is no way to guess how large
buf should be.
This page is part of release 5.10 of the Linux
project. A description of the project, information about reporting bugs,
and the latest version of this page, can be found at