Contents of /trunk/mkinitrd-magellan/busybox/debianutils/run_parts.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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File size: 4448 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini run-parts implementation for busybox |
4 | * |
5 | * Copyright (C) 2007 Bernhard Reutner-Fischer |
6 | * |
7 | * Based on a older version that was in busybox which was 1k big.. |
8 | * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it> |
9 | * |
10 | * Based on the Debian run-parts program, version 1.15 |
11 | * Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>, |
12 | * Copyright (C) 1996-1999 Guy Maor <maor@debian.org> |
13 | * |
14 | * |
15 | * Licensed under GPL v2 or later, see file LICENSE in this tarball for details. |
16 | */ |
17 | |
18 | /* This is my first attempt to write a program in C (well, this is my first |
19 | * attempt to write a program! :-) . */ |
20 | |
21 | /* This piece of code is heavily based on the original version of run-parts, |
22 | * taken from debian-utils. I've only removed the long options and a the |
23 | * report mode. As the original run-parts support only long options, I've |
24 | * broken compatibility because the BusyBox policy doesn't allow them. |
25 | * The supported options are: |
26 | * -t test. Print the name of the files to be executed, without |
27 | * execute them. |
28 | * -a ARG argument. Pass ARG as an argument the program executed. It can |
29 | * be repeated to pass multiple arguments. |
30 | * -u MASK umask. Set the umask of the program executed to MASK. |
31 | */ |
32 | |
33 | #include "libbb.h" |
34 | |
35 | struct globals { |
36 | char **names; |
37 | int cur; |
38 | char *cmd[1]; |
39 | } FIX_ALIASING; |
40 | #define G (*(struct globals*)&bb_common_bufsiz1) |
41 | #define names (G.names) |
42 | #define cur (G.cur ) |
43 | #define cmd (G.cmd ) |
44 | |
45 | enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 }; |
46 | |
47 | enum { |
48 | OPT_r = (1 << 0), |
49 | OPT_a = (1 << 1), |
50 | OPT_u = (1 << 2), |
51 | OPT_t = (1 << 3), |
52 | OPT_l = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_FANCY, |
53 | }; |
54 | |
55 | #if ENABLE_FEATURE_RUN_PARTS_FANCY |
56 | #define list_mode (option_mask32 & OPT_l) |
57 | #else |
58 | #define list_mode 0 |
59 | #endif |
60 | |
61 | /* Is this a valid filename (upper/lower alpha, digits, |
62 | * underscores, and hyphens only?) |
63 | */ |
64 | static bool invalid_name(const char *c) |
65 | { |
66 | c = bb_basename(c); |
67 | |
68 | while (*c && (isalnum(*c) || *c == '_' || *c == '-')) |
69 | c++; |
70 | |
71 | return *c; /* TRUE (!0) if terminating NUL is not reached */ |
72 | } |
73 | |
74 | static int bb_alphasort(const void *p1, const void *p2) |
75 | { |
76 | int r = strcmp(*(char **) p1, *(char **) p2); |
77 | return (option_mask32 & OPT_r) ? -r : r; |
78 | } |
79 | |
80 | static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth) |
81 | { |
82 | if (depth == 1) |
83 | return TRUE; |
84 | |
85 | if (depth == 2 |
86 | && ( !(statbuf->st_mode & (S_IFREG | S_IFLNK)) |
87 | || invalid_name(file) |
88 | || (!list_mode && access(file, X_OK) != 0)) |
89 | ) { |
90 | return SKIP; |
91 | } |
92 | |
93 | names = xrealloc_vector(names, 4, cur); |
94 | names[cur++] = xstrdup(file); |
95 | /*names[cur] = NULL; - xrealloc_vector did it */ |
96 | |
97 | return TRUE; |
98 | } |
99 | |
100 | #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS |
101 | static const char runparts_longopts[] ALIGN1 = |
102 | "arg\0" Required_argument "a" |
103 | "umask\0" Required_argument "u" |
104 | "test\0" No_argument "t" |
105 | #if ENABLE_FEATURE_RUN_PARTS_FANCY |
106 | "list\0" No_argument "l" |
107 | "reverse\0" No_argument "r" |
108 | //TODO: "verbose\0" No_argument "v" |
109 | #endif |
110 | ; |
111 | #endif |
112 | |
113 | int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
114 | int run_parts_main(int argc UNUSED_PARAM, char **argv) |
115 | { |
116 | const char *umask_p = "22"; |
117 | llist_t *arg_list = NULL; |
118 | unsigned n; |
119 | int ret; |
120 | |
121 | #if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS |
122 | applet_long_options = runparts_longopts; |
123 | #endif |
124 | /* We require exactly one argument: the directory name */ |
125 | opt_complementary = "=1:a::"; |
126 | getopt32(argv, "ra:u:t"IF_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p); |
127 | |
128 | umask(xstrtou_range(umask_p, 8, 0, 07777)); |
129 | |
130 | n = 1; |
131 | while (arg_list && n < NUM_CMD) { |
132 | cmd[n++] = llist_pop(&arg_list); |
133 | } |
134 | /* cmd[n] = NULL; - is already zeroed out */ |
135 | |
136 | /* run-parts has to sort executables by name before running them */ |
137 | |
138 | recursive_action(argv[optind], |
139 | ACTION_RECURSE|ACTION_FOLLOWLINKS, |
140 | act, /* file action */ |
141 | act, /* dir action */ |
142 | NULL, /* user data */ |
143 | 1 /* depth */ |
144 | ); |
145 | |
146 | if (!names) |
147 | return 0; |
148 | |
149 | qsort(names, cur, sizeof(char *), bb_alphasort); |
150 | |
151 | n = 0; |
152 | while (1) { |
153 | char *name = *names++; |
154 | if (!name) |
155 | break; |
156 | if (option_mask32 & (OPT_t | OPT_l)) { |
157 | puts(name); |
158 | continue; |
159 | } |
160 | cmd[0] = name; |
161 | ret = spawn_and_wait(cmd); |
162 | if (ret == 0) |
163 | continue; |
164 | n = 1; |
165 | if (ret < 0) |
166 | bb_perror_msg("can't execute '%s'", name); |
167 | else /* ret > 0 */ |
168 | bb_error_msg("%s exited with code %d", name, ret & 0xff); |
169 | } |
170 | |
171 | return n; |
172 | } |