Jérôme Duval
858e5775ab
chmod is allowed. Change-Id: Idcac38bdd7f0d614538421a41dfd30066a0c316f Reviewed-on: https://review.haiku-os.org/c/1444 Reviewed-by: Adrien Destugues <[email protected]> Reviewed-by: Axel Dörfler <[email protected]>
51 lines
979 B
C++
51 lines
979 B
C++
/*
|
|
* Copyright 2008, Axel Dörfler, [email protected].
|
|
* Distributed under the terms of the MIT License.
|
|
*/
|
|
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
|
|
|
|
extern const char *__progname;
|
|
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
if (argc < 3) {
|
|
fprintf(stderr, "usage: %s <file> <size>\n", __progname);
|
|
return 1;
|
|
}
|
|
|
|
struct stat st;
|
|
if (stat(argv[1], &st) != 0) {
|
|
fprintf(stderr, "%s: cannot stat file \"%s\": %s\n", __progname,
|
|
argv[1], strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
int fd = open(argv[1], O_RDONLY);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "%s: could open the file read-only \"%s\": %s\n",
|
|
__progname, argv[1], strerror(errno));
|
|
return 1;
|
|
}
|
|
if (fchmod(fd, 0666) == -1) {
|
|
fprintf(stderr, "%s: couldn't chmod a file opened read-only \"%s\": %s\n",
|
|
__progname, argv[1], strerror(errno));
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|