let ipkg fail when a package file to be installed is not found
[openwrt.git] / openwrt / package / busybox / patches / 190-ash_performance.patch
1 diff -urN busybox.old/shell/ash.c busybox.dev/shell/ash.c
2 --- busybox.old/shell/ash.c     2005-11-12 22:39:19.853826250 +0100
3 +++ busybox.dev/shell/ash.c     2005-11-12 22:39:42.771258500 +0100
4 @@ -1414,6 +1414,13 @@
5  
6  #define NUMBUILTINS  (sizeof (builtincmd) / sizeof (struct builtincmd) )
7  
8 +static const char *safe_applets[] = { 
9 +       "[", "test", "echo", "cat",
10 +       "ln", "cp", "touch", "mkdir", "rm",
11 +       "cut", "hexdump", "awk", "sort",
12 +       "find", "xargs", "ls", "dd",
13 +       "chown", "chmod"
14 +};
15  
16  
17  struct cmdentry {
18 @@ -2050,6 +2057,19 @@
19  static void exitshell(void) __attribute__((__noreturn__));
20  static int decode_signal(const char *, int);
21  
22 +
23 +static int is_safe_applet(char *name)
24 +{
25 +       int n = sizeof(safe_applets) / sizeof(char *);
26 +       int i;
27 +       for (i = 0; i < n; i++)
28 +               if (strcmp(safe_applets[i], name) == 0)
29 +                       return 1;
30 +
31 +       return 0;
32 +}
33 +
34 +
35  /*
36   * This routine is called when an error or an interrupt occurs in an
37   * interactive shell and control is returned to the main command loop.
38 @@ -3680,6 +3700,7 @@
39         clearredir(1);
40         envp = environment();
41         if (strchr(argv[0], '/') != NULL
42 +               || is_safe_applet(argv[0])
43  #ifdef CONFIG_FEATURE_SH_STANDALONE_SHELL
44                 || find_applet_by_name(argv[0])
45  #endif
46 @@ -3721,6 +3742,18 @@
47  tryexec(char *cmd, char **argv, char **envp)
48  {
49         int repeated = 0;
50 +       struct BB_applet *a;
51 +       int argc = 0;
52 +       char **c;
53 +       
54 +       if(strchr(cmd, '/') == NULL && is_safe_applet(cmd) && (a = find_applet_by_name(cmd)) != NULL) {
55 +               c = argv;
56 +               while (*c != NULL) {
57 +                       c++; argc++;
58 +               }
59 +               bb_applet_name = cmd;
60 +               exit(a->main(argc, argv));
61 +       }
62  #ifdef CONFIG_FEATURE_SH_STANDALONE_SHELL
63         int flg_bb = 0;
64         char *name = cmd;
65 @@ -3919,6 +3952,12 @@
66         }
67  #endif
68  
69 +       if (is_safe_applet(name)) {
70 +               entry->cmdtype = CMDNORMAL;
71 +               entry->u.index = -1;
72 +               return;
73 +       }
74 +
75         updatetbl = (path == pathval());
76         if (!updatetbl) {
77                 act |= DO_ALTPATH;