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author | Ulrich Drepper <drepper@redhat.com> | 2005-12-14 08:43:25 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2005-12-14 08:43:25 +0000 |
commit | b6ab06cef4670e02756bcdd4d2c33a49369a4346 (patch) | |
tree | b30743eb9728d890d1519f62b2d1f2b96f62547a /elf/dl-origin.c | |
parent | d1dc39a44e339f9c48baa3854fffb3d68c73c8fa (diff) | |
download | glibc-b6ab06cef4670e02756bcdd4d2c33a49369a4346.zip glibc-b6ab06cef4670e02756bcdd4d2c33a49369a4346.tar.gz glibc-b6ab06cef4670e02756bcdd4d2c33a49369a4346.tar.bz2 |
2005-12-13 Ulrich Drepper <drepper@redhat.com>
Diffstat (limited to 'elf/dl-origin.c')
-rw-r--r-- | elf/dl-origin.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/elf/dl-origin.c b/elf/dl-origin.c new file mode 100644 index 0000000..8761937 --- /dev/null +++ b/elf/dl-origin.c @@ -0,0 +1,51 @@ +/* Find path of executable. + Copyright (C) 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stdlib.h> +#include <string.h> +#include <sys/param.h> +#include <ldsodefs.h> + +#include <dl-dst.h> + + +const char * +_dl_get_origin (void) +{ + char *result = (char *) -1; + /* We use the environment variable LD_ORIGIN_PATH. If it is set make + a copy and strip out trailing slashes. */ + if (GLRO(dl_origin_path) != NULL) + { + size_t len = strlen (GLRO(dl_origin_path)); + result = (char *) malloc (len + 1); + if (result == NULL) + result = (char *) -1; + else + { + char *cp = __mempcpy (result, GLRO(dl_origin_path), len); + while (cp > result + 1 && cp[-1] == '/') + --cp; + *cp = '\0'; + } + } + + return result; +} |