git: 9front

ref: 2fe0d40ef94dfc8934c0eec79237e1c2e1785f8d
dir: /sys/src/ape/lib/ap/plan9/chmod.c/

#include "lib.h"
#include <errno.h>
#include <stdlib.h>
#include "sys9.h"
#include "dir.h"

int
chmod(const char *path, mode_t mode)
{
	Dir d, *dir;

	dir = _dirstat(path);
	if(dir == nil){
error:
		_syserrno();
		return -1;
	}
	_nulldir(&d);
	d.mode = (dir->mode & ~0777) | (mode & 0777);
	free(dir);
	if(_dirwstat(path, &d) < 0)
		goto error;

	return 0;
}

int
fchmod(int fd, mode_t mode)
{
	Dir d, *dir;

	dir = _dirfstat(fd);
	if(dir == nil){
error:
		_syserrno();
		return -1;
	}
	_nulldir(&d);
	d.mode = (dir->mode & ~ 0777) | (mode & 0777);
	free(dir);
	if(_dirfwstat(fd, &d) < 0)
		goto error;

	return 0;
}