busybox/libbb/remove_file.c

/* vi: set sw=4 ts=4: */
/*
 * Mini remove_file implementation for busybox
 *
 * Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

/* Used from NOFORK applets. Must not allocate anything */

int FAST_FUNC remove_file(const char *path, int flags)
{
	struct stat path_stat;

	if (lstat(path, &path_stat) < 0) {
		if (errno != ENOENT) {
			bb_perror_msg("cannot stat '%s'", path);
			return -1;
		}
		if (!(flags & FILEUTILS_FORCE)) {
			bb_perror_msg("cannot remove '%s'", path);
			return -1;
		}
		return 0;
	}

	if (S_ISDIR(path_stat.st_mode)) {
		DIR *dp;
		struct dirent *d;
		int status = 0;

		if (!(flags & FILEUTILS_RECUR)) {
			bb_error_msg("%s: is a directory", path);
			return -1;
		}

		if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 && isatty(0))
		 || (flags & FILEUTILS_INTERACTIVE)
		) {
			fprintf(stderr, "%s: descend into directory '%s'? ", applet_name,
					path);
			if (!bb_ask_confirmation())
				return 0;
		}

		dp = opendir(path);
		if (dp == NULL) {
			return -1;
		}

		while ((d = readdir(dp)) != NULL) {
			char *new_path;

			new_path = concat_subpath_file(path, d->d_name);
			if (new_path == NULL)
				continue;
			if (remove_file(new_path, flags) < 0)
				status = -1;
			free(new_path);
		}

		if (closedir(dp) < 0) {
			bb_perror_msg("cannot close '%s'", path);
			return -1;
		}

		if (flags & FILEUTILS_INTERACTIVE) {
			fprintf(stderr, "%s: remove directory '%s'? ", applet_name, path);
			if (!bb_ask_confirmation())
				return status;
		}

		if (rmdir(path) < 0) {
			bb_perror_msg("cannot remove '%s'", path);
			return -1;
		}

		return status;
	}

	/* !ISDIR */
	if ((!(flags & FILEUTILS_FORCE)
	     && access(path, W_OK) < 0
	     && !S_ISLNK(path_stat.st_mode)
	     && isatty(0))
	 || (flags & FILEUTILS_INTERACTIVE)
	) {
		fprintf(stderr, "%s: remove '%s'? ", applet_name, path);
		if (!bb_ask_confirmation())
			return 0;
	}

	if (unlink(path) < 0) {
		bb_perror_msg("cannot remove '%s'", path);
		return -1;
	}

	return 0;
}
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* Mini remove_file implementation for busybox
4			*
5			* Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
6			*
7			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8			*/
9
10			#include "libbb.h"
11
12	niro	816	/* Used from NOFORK applets. Must not allocate anything */
13
14			int FAST_FUNC remove_file(const char *path, int flags)
15	niro	532	{
16			struct stat path_stat;
17
18			if (lstat(path, &path_stat) < 0) {
19			if (errno != ENOENT) {
20			bb_perror_msg("cannot stat '%s'", path);
21			return -1;
22			}
23			if (!(flags & FILEUTILS_FORCE)) {
24			bb_perror_msg("cannot remove '%s'", path);
25			return -1;
26			}
27			return 0;
28			}
29
30			if (S_ISDIR(path_stat.st_mode)) {
31			DIR *dp;
32			struct dirent *d;
33			int status = 0;
34
35			if (!(flags & FILEUTILS_RECUR)) {
36			bb_error_msg("%s: is a directory", path);
37			return -1;
38			}
39
40	niro	816	if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 && isatty(0))
41			\|\| (flags & FILEUTILS_INTERACTIVE)
42			) {
43	niro	532	fprintf(stderr, "%s: descend into directory '%s'? ", applet_name,
44			path);
45			if (!bb_ask_confirmation())
46			return 0;
47			}
48
49	niro	816	dp = opendir(path);
50			if (dp == NULL) {
51	niro	532	return -1;
52			}
53
54			while ((d = readdir(dp)) != NULL) {
55			char *new_path;
56
57			new_path = concat_subpath_file(path, d->d_name);
58	niro	816	if (new_path == NULL)
59	niro	532	continue;
60			if (remove_file(new_path, flags) < 0)
61			status = -1;
62			free(new_path);
63			}
64
65			if (closedir(dp) < 0) {
66			bb_perror_msg("cannot close '%s'", path);
67			return -1;
68			}
69
70			if (flags & FILEUTILS_INTERACTIVE) {
71			fprintf(stderr, "%s: remove directory '%s'? ", applet_name, path);
72			if (!bb_ask_confirmation())
73			return status;
74			}
75
76			if (rmdir(path) < 0) {
77			bb_perror_msg("cannot remove '%s'", path);
78			return -1;
79			}
80
81			return status;
82	niro	816	}
83	niro	532
84	niro	816	/* !ISDIR */
85			if ((!(flags & FILEUTILS_FORCE)
86			&& access(path, W_OK) < 0
87			&& !S_ISLNK(path_stat.st_mode)
88			&& isatty(0))
89			\|\| (flags & FILEUTILS_INTERACTIVE)
90			) {
91			fprintf(stderr, "%s: remove '%s'? ", applet_name, path);
92			if (!bb_ask_confirmation())
93			return 0;
94			}
95	niro	532
96	niro	816	if (unlink(path) < 0) {
97			bb_perror_msg("cannot remove '%s'", path);
98			return -1;
99	niro	532	}
100	niro	816
101			return 0;
102	niro	532	}