NAME
fflagstostr,
strtofflags —
convert between file flag bits and
their string names
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include
<unistd.h>
char *
fflagstostr(unsigned long
flags);
int
strtofflags(char **stringp,
unsigned long *setp, unsigned long
*clrp);
DESCRIPTION
The
fflagstostr()
function returns a comma separated string of the file flags represented by
flags. If no flags are set a zero length string is
returned.
If memory cannot be allocated for the return
value,
fflagstostr()
returns NULL.
The value returned from
fflagstostr()
is obtained from
malloc()
and should be returned to the system with
free()
when the program is done with it.
The
strtofflags()
function takes a string of file flags, as described in
chflags(1), parses it, and returns the 'set' flags and 'clear' flags
such as would be given as arguments to
chflags(2). On success strtofflags() returns
0, otherwise it returns non-zero and stringp is left
pointing to the offending token.
ERRORS
The fflagstostr() function may fail and
set errno for any of the errors specified for the library routine
malloc(3).
SEE ALSO
HISTORY
The fflagstostr() and
strtofflags() functions first appeared in
FreeBSD 4.0.