sysfs(2) sysfs(2)
NAME
sysfs - get file system type information
SYNOPSIS
#include <sys/fstyp.h>
#include <sys/fsid.h>
int sysfs(int opcode, const char *fsname);
int sysfs(int opcode, int fsindex, char *buf);
int sysfs(int opcode);
DESCRIPTION
sysfs() returns information about the file system types configured in
the system. The number of arguments accepted by sysfs() varies and
depends on the opcode. The currently recognized opcodes and their
functions are:
GETFSIND Translates fsname, a null-terminated file-system type iden-
tifier, into a file- system type index.
GETFSTYP Translates fsindex, a file-system type index, into a
null-terminated file-system type identifier and writes it
into the buffer pointed to by buf; this buffer must be at
least of size FSTYPSZ as defined in sys/fstyp.h.
GETNFSTYP Returns the total number of file system types configured in
the system.
sysfs() fails if one or more of the following apply:
EINVAL fsname points to an invalid file-system identifier;
fsindex is zero, or invalid; opcode is invalid.
EFAULT buf or fsname points outside the allocated address space
for the process.
RESULT
Upon successful completion, sysfs() returns the file-system type index
if the opcode is GETFSIND, a value of 0 if the opcode is GETFSTYP, or
the number of file system types configured if the opcode is GETNFSTYP.
Otherwise, a value of -1 is returned and errno is set to indicate the
error.
Page 1 Reliant UNIX 5.44 Printed 11/98