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99 Commits

Author SHA1 Message Date
Simon Ruderich
f78c0377c1 Prevent crash in execve() if env is NULL 2018-02-01 21:40:02 +01:00
Simon Ruderich
545c6af1da Update copyright year 2018-02-01 21:10:46 +01:00
Simon Ruderich
8a65b4486f update copyright year 2015-08-28 12:25:36 +02:00
Simon Ruderich
3676d3f21f vfork(): fix incorrect comment 2014-11-15 18:35:05 +01:00
Simon Ruderich
733e149c1a fix typos in comments 2014-06-22 18:24:49 +02:00
Simon Ruderich
b6d1dc09b6 handle_recursive: fix race condition if threads are used 
Requires thread-local storage.

Another solution would be a mutex, but this is slower and more
complicated and might cause issues with some programs.
 2014-04-08 14:38:01 +02:00
Simon Ruderich
f54cd101d7 Update copyright year. 2014-01-01 16:41:01 +01:00
Simon Ruderich
39d313d1d4 Fix error_at_line() not always exiting if status != 0. 
Also add tests.
 2014-01-01 16:37:48 +01:00
Simon Ruderich
ac9101941e Add likely() to tracked_fds_find(). 2013-09-15 00:15:50 +02:00
Simon Ruderich
73a6c78e7b Remove unnecessary check in handle_*_pre(). 
init_pre_post_string() sets both pre_string and post_string, so checking
only one suffices.
 2013-09-15 00:10:45 +02:00
Simon Ruderich
291a143267 Remove unnecessary if in init_from_environment(). 2013-07-21 14:25:54 +02:00
Simon Ruderich
08e7324497 constants.h: Fix indentation. 2013-07-07 14:43:29 +02:00
Simon Ruderich
b950cdb792 Add COLORED_STDERR_IGNORED_BINARIES to exclude binaries. 2013-07-07 13:33:44 +02:00
Simon Ruderich
9ff0ffbd28 Add missing assert() to init_from_environment(). 2013-07-07 12:54:59 +02:00
Simon Ruderich
2241f5278e Handle recursive calls of handle_*_{pre,post}() functions. 2013-07-01 03:23:50 +02:00
Simon Ruderich
d49cd5d92a Also hook un-macroed putc when it's a macro. 
The macro might define it to something else, but the non-macro version
is also used in some cases, e.g. in gcc 4.8's collect2 on Debian with
eglibc 2.17-7.
 2013-06-30 22:14:33 +02:00
Simon Ruderich
afa1ef98fe Restore environment for execvpe() if the exec fails. 2013-06-29 23:24:04 +02:00
Simon Ruderich
d08a512806 Set DEFAULT_PRE_STRING to red. 
Bright red doesn't work in GNU/Linux's console.
 2013-06-29 23:24:03 +02:00
Simon Ruderich
2fc66e15eb Improve checks for invalid file descriptors. 
Just in case a real dup*() or fcntl() doesn't return -1 on error, but
something like -2.
 2013-06-21 23:03:12 +02:00
Simon Ruderich
0d7f306898 Overwrite tracked file descriptors when exporting COLORED_STDERR_FDS. 
If the list of tracked file descriptors is modified to contain unwanted
values (e.g. when a parent process closes or redirects stderr), this
makes it possible to set the tracked file descriptors back to a given
list.

This problem occurred with startx which somehow closes or redirects
stderr. As COLORED_STDERR_FDS was set in the shell running startx, this
disabled coloring stderr for all processes started in the X11 session.

This is no longer an issue. As COLORED_STDERR_FDS is set in the shell
configuration file, it automatically sets the list to the correct value
when a shell is opened in the terminal emulator once X11 is running.
 2013-06-21 23:03:12 +02:00
Simon Ruderich
045ca46e79 Hook __swbuf() on FreeBSD. 
Coloring works fine now on FreeBSD (with some minor issues). Tests still
fail though.
 2013-06-20 23:33:27 +02:00
Simon Ruderich
ba2283bd37 Remove invalid assert() in tracked_fds_find(). 2013-06-20 23:17:03 +02:00
Simon Ruderich
f3c734eb7d configure.ac: Check if __overflow() is available. 2013-06-20 22:14:42 +02:00
Simon Ruderich
b0c02291be Hook __overflow() correctly. 
It takes a FILE * and must be hooked with HOOK_FILE*().
 2013-06-20 22:13:04 +02:00
Simon Ruderich
4eb55ac071 {fwrite,fputs,fputc}_unlocked() are not in POSIX. 
Define fwrite_unlocked(), fputs_unlocked() and fputc_unlocked() only if
they are available on the system.
 2013-06-20 20:56:51 +02:00
Simon Ruderich
cfad8a624c Update documentation. 2013-06-18 00:07:03 +02:00
Simon Ruderich
a63fef43c2 Add missing #include <sys/stat.h>. 2013-06-17 23:26:00 +02:00
Simon Ruderich
a58d1a9017 Mark hooked functions as visibility(("protected")). 2013-06-15 03:36:50 +02:00
Simon Ruderich
ca12529c8f hookmacros.h: Reduce duplication in macros. 
Also preparation to add attributes to function declarations.
 2013-06-15 03:23:53 +02:00
Simon Ruderich
941370dda9 Hook BSD err(), errx(), warn(), warnx(), etc. functions. 
err(), errx(), warn(), warnx(), verr(), verrx(), vwarn(), vwarnx() are
hooked.
 2013-06-15 02:39:52 +02:00
Simon Ruderich
1068648718 Minor documentation update. 2013-06-15 02:21:27 +02:00
Simon Ruderich
0a909cac79 Use locally defined functions in hooks where possible. 
Don't create a hook and call the "real" function when it's enough to
call an existing hook for this function.
 2013-06-15 01:58:36 +02:00
Simon Ruderich
217e8c8bc5 Define real_*() static variables with macros. 2013-06-15 00:54:46 +02:00
Simon Ruderich
18d52b3b5a Install libcoloredstderr.so read-only. 
Prevents accidental truncates of libcoloredstderr.so with `cp` which
crash all programs which have loaded it.
 2013-06-14 13:40:06 +02:00
Simon Ruderich
1d1b6d7769 Remove duplicate code in init_from_environment(). 2013-06-13 22:15:49 +02:00
Simon Ruderich
45d25526c0 Minor documentation updates. 2013-06-13 22:15:09 +02:00
Simon Ruderich
3d46e3ab9b Add missing const and document where it can't be used. 2013-06-13 22:13:16 +02:00
Simon Ruderich
59375c2b79 Fix possible memory overwrite in init_from_environment(). 
It was possible for a user to overwrite memory at a relative location
with 1 by passing a negative file descriptor.
 2013-06-13 22:08:08 +02:00
Simon Ruderich
f30dbbd26d Add more error checks. 2013-06-13 21:56:50 +02:00
Simon Ruderich
e5a94fa847 Remove unnecessary calls to update_environment() in exec*(). 2013-06-13 21:50:51 +02:00
Simon Ruderich
1e02760898 constants.h: Fix indentation. 2013-06-13 21:45:19 +02:00
Simon Ruderich
7eb1667d41 ldpreload.h: Add missing unlikely() in DLSYM_FUNCTION(). 2013-06-13 21:44:55 +02:00
Simon Ruderich
0ad5e4db04 hookmacros.h: Remove duplication in _HOOK_PRE_FD_/_HOOK_PRE_FILE. 2013-06-13 21:44:55 +02:00
Simon Ruderich
d171e6bbec trackfds.h: Add missing inline for consistency. 2013-06-13 21:34:29 +02:00
Simon Ruderich
6d6ad4423a Add assert()s. 2013-06-13 21:33:27 +02:00
Simon Ruderich
37cb5686de Handle invalid arguments to close()/fclose() better. 2013-06-13 21:19:15 +02:00
Simon Ruderich
7adfbfd2cf Fix hook for putc_unlocked() with glibc. 
putc_unlocked() is a macro which expands to __overflow() in some cases.
 2013-06-13 12:59:12 +02:00
Simon Ruderich
52b4e91146 hookmacros.h: Minor style fix. 2013-06-13 01:27:45 +02:00
Simon Ruderich
9af3c2c727 Add another debug() print to init_from_environment(). 2013-06-10 22:25:31 +02:00
Simon Ruderich
779ba750f7 Fix compilation with clang. 2013-06-10 21:27:12 +02:00