freebsd-skq/bin/setfacl/file.c
emaste 63000aa1e6 setfacl: style and break main() into manageable pieces
Submitted by:	Mitchell Horne
MFC with:	r332396
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D15060
2018-04-27 15:25:24 +00:00

77 lines
2.3 KiB
C

/*-
* Copyright (c) 2001 Chris D. Faulhaber
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/acl.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include "setfacl.h"
/*
* read acl text from a file and return the corresponding acl
*/
acl_t
get_acl_from_file(const char *filename)
{
FILE *file;
size_t len;
char buf[BUFSIZ+1];
if (filename == NULL)
err(1, "(null) filename in get_acl_from_file()");
if (strcmp(filename, "-") == 0) {
if (have_stdin)
err(1, "cannot specify more than one stdin");
file = stdin;
have_stdin = true;
} else {
file = fopen(filename, "r");
if (file == NULL)
err(1, "fopen() %s failed", filename);
}
len = fread(buf, (size_t)1, sizeof(buf) - 1, file);
buf[len] = '\0';
if (ferror(file) != 0) {
fclose(file);
err(1, "error reading from %s", filename);
} else if (feof(file) == 0) {
fclose(file);
errx(1, "line too long in %s", filename);
}
fclose(file);
return (acl_from_text(buf));
}