Mercurial > hg > aboriginal

annotate sources/toys/wrappy.c @ 1541:e4f766efa39f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Sort busybox config entries to group stuff toybox can replace. Also add ps.
author Rob Landley <rob@landley.net>
date Thu, 06 Sep 2012 03:44:47 -0500
parents 850da666acc6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
1 // A little wrapper to figure out what commands you're actually using.
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
2
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
3 // To use it, you'll need to make a directory of symlinks and set up two
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
4 // environment variables. Something like:
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
5 //
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
6 // export WRAPPY_LOGPATH=/path/to/wrappy.log
897
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
7 // export OLDPATH="$PATH"
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
8 //
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
9 // WRAPPYDIR=/path/to/wrappy
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
10 // cp wrappy $WRAPPYDIR
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
11 // for i in `echo $PATH | sed 's/:/ /g'`
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
12 // do
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
13 // for j in `ls $i`
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
14 // do
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
15 // ln -s wrappy $WRAPPYDIR/$j
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
16 // done
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
17 // done
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
18 //
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
19 // PATH="$WRAPPYDIR" make thingy
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
20
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
21 #include <fcntl.h>
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
22 #include <stdio.h>
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
23 #include <string.h>
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
24 #include <stdlib.h>
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
25
897
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
26 // No, I'm not doing any bounds checking. It's a debug wrapper.
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
27 char blah[65536];
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
28
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
29 int main(int argc, char *argv[], char *env[])
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
30 {
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
31 char *logpath, *realpath, *p, *p2, *p3;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
32
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
33 int i, fd;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
34
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
35 // If these environment variables didn't propogate down to our build, how
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
36 // did $PATH make it there? (Faily noisily if they are missing...)
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
37
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
38 logpath = getenv("WRAPPY_LOGPATH");
897
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
39 realpath = getenv("OLDPATH");
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
40 if (!logpath || !realpath) {
897
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
41 fprintf(stderr, "No %s\n", logpath ? "OLDPATH" : "WRAPPY_LOGPATH");
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
42 exit(1);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
43 }
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
44
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
45 // Figure out name of command being run.
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
46
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
47 p2 = strrchr(*argv, '/');
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
48 if (!p2) p2=*argv;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
49 else p2++;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
50
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
51 // Write command line to a buffer. (We need the whole command line in one
897
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
52 // buffer so we can do a single atomic write, so commands don't get
850da666acc6 Redo command recording: no longer RECORD_COMMMANDS config entry, now sources/more/record-commands.sh run to set up the wrapper (either before or after host-tools.sh). General cleanup and simplification of code this interacted with, plus clean up bit rot in the reporting.
Rob Landley <rob@landley.net>
parents: 365
diff changeset
53 // interleaved via make -j.)
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
54
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
55 p=blah + sprintf(blah, "%s ",p2);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
56 for (i=1; i<argc && (p-blah)<sizeof(blah); i++) {
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
57 *(p++)='"';
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
58 for (p3 = argv[i]; *p3 && (p-blah)<sizeof(blah); p3++) {
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
59 char *s = "\n\\\"", *ss = strchr(s, *p3);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
60
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
61 if (ss) {
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
62 *(p++)='\\';
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
63 *(p++)="n\\\""[ss-s];
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
64 } else *(p++) = *p3;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
65 }
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
66 *(p++)='"';
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
67 *(p++)=' ';
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
68 }
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
69 p[-1]='\n';
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
70
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
71 // Log the command line, using O_APPEND and an atomic write so this entry
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
72 // always goes at the end no matter what other processes are writing
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
73 // into the file.
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
74
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
75 fd=open(logpath, O_WRONLY|O_CREAT|O_APPEND, 0777);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
76 write(fd, blah, p-blah);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
77 close(fd);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
78
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
79 // Hand off control to the real executable
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
80
365
f9ec1fd54034 Correct log message, check last $PATH element properly, and set argv[0] to path
Rob Landley <rob@landley.net>
parents: 352
diff changeset
81 for (p = p3 = realpath; ; p3++) {
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
82 if (*p3==':' || !*p3) {
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
83 char snapshot = *p3;
365
f9ec1fd54034 Correct log message, check last $PATH element properly, and set argv[0] to path
Rob Landley <rob@landley.net>
parents: 352
diff changeset
84
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
85 *p3 = 0;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
86 snprintf(blah, sizeof(blah)-1, "%s/%s", p, p2);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
87 *p3 = snapshot;
365
f9ec1fd54034 Correct log message, check last $PATH element properly, and set argv[0] to path
Rob Landley <rob@landley.net>
parents: 352
diff changeset
88 argv[0]=blah;
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
89 execve(blah, argv, env);
365
f9ec1fd54034 Correct log message, check last $PATH element properly, and set argv[0] to path
Rob Landley <rob@landley.net>
parents: 352
diff changeset
90 if (!*p3) break;
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
91 p = p3+1;
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
92 }
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
93 }
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
94
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
95 // Should never happen, means environment setup is wrong.
365
f9ec1fd54034 Correct log message, check last $PATH element properly, and set argv[0] to path
Rob Landley <rob@landley.net>
parents: 352
diff changeset
96 fprintf(stderr, "Didn't find %s\n", p2);
352
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
97 exit(1);
1782b77fae15 Add command logging. Set RECORD_COMMANDS=1 to log every command line run
Rob Landley <rob@landley.net>
parents:
diff changeset
98 }