Contents of /tags/mkinitrd-6_3_0/busybox/libbb/remove_file.c
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Thu Aug 19 10:14:02 2010 UTC (14 years, 1 month ago) by niro
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File size: 2104 byte(s)
Thu Aug 19 10:14:02 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 2104 byte(s)
tagged 'mkinitrd-6_3_0'
1 | /* 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 | /* Used from NOFORK applets. Must not allocate anything */ |
13 | |
14 | int FAST_FUNC remove_file(const char *path, int flags) |
15 | { |
16 | struct stat path_stat; |
17 | |
18 | if (lstat(path, &path_stat) < 0) { |
19 | if (errno != ENOENT) { |
20 | bb_perror_msg("can't stat '%s'", path); |
21 | return -1; |
22 | } |
23 | if (!(flags & FILEUTILS_FORCE)) { |
24 | bb_perror_msg("can't 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 | if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 && isatty(0)) |
41 | || (flags & FILEUTILS_INTERACTIVE) |
42 | ) { |
43 | fprintf(stderr, "%s: descend into directory '%s'? ", applet_name, |
44 | path); |
45 | if (!bb_ask_confirmation()) |
46 | return 0; |
47 | } |
48 | |
49 | dp = opendir(path); |
50 | if (dp == NULL) { |
51 | 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 | if (new_path == NULL) |
59 | 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("can't 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("can't remove '%s'", path); |
78 | return -1; |
79 | } |
80 | |
81 | return status; |
82 | } |
83 | |
84 | /* !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 | |
96 | if (unlink(path) < 0) { |
97 | bb_perror_msg("can't remove '%s'", path); |
98 | return -1; |
99 | } |
100 | |
101 | return 0; |
102 | } |