Query: sysfs
OS: debian
Section: 2
Links: debian man pages all man pages forum categories
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SYSFS(2) Linux Programmer's Manual SYSFS(2)NAMEsysfs - get file system type informationSYNOPSISint sysfs(int option, const char *fsname); int sysfs(int option, unsigned int fs_index, char *buf); int sysfs(int option);DESCRIPTIONsysfs() 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 VALUEOn 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.ERRORSEFAULT Either fsname or buf is outside your accessible address space. EINVAL fsname is not a valid file-system type identifier; fs_index is out-of-bounds; option is invalid.CONFORMING TOSVr4.NOTESThis System-V derived system call is obsolete; don't use it. On systems with /proc, the same information can be obtained via /proc/filesystems; use that interface instead.BUGSThere is no libc or glibc support. There is no way to guess how large buf should be.COLOPHONThis page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2010-06-27 SYSFS(2)