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authorUlrich Drepper <drepper@redhat.com>1998-08-13 19:44:05 +0000
committerUlrich Drepper <drepper@redhat.com>1998-08-13 19:44:05 +0000
commit9d141cae00c957096045d08fe504b4a2be66ab75 (patch)
tree479eb1c5e008066fb02734e7b763f255a8407768 /elf/sln.c
parent1f539fd1dc223141f6c3bce738b4654d6220fcef (diff)
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Update.
1998-08-13 19:41 Ulrich Drepper <drepper@cygnus.com> * posix/getconf.c: Add support for systems with incomplete confname.h. * sysdeps/posix/sigset.c: Allow SIG_HOLD being undefined. * sysdeps/posix/wait3.c: Make it work. 1998-08-13 Andreas Jaeger <aj@arthur.rhein-neckar.de> * Makefile ($(inst_slibdir)/libc-$(version).so): Remove. (elf/ldso_install): Remove. * elf/Makefile (distribute): Add sln.c. (others): Add sln. (others-static): Add sln. (install-rootsbin): Add sln. (others-static): Add sln. (ldso_install): Remove. 1998-07-24 10:58 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules (install-clean-symbolic-link-list): Make phony. * Makefile (install-symbolic-link): Make phony. Depend on subdir_install for parallel makes. 1998-07-22 Ulrich Drepper <drepper@cygnus.com> * elf/Makefile (distribute): Add sln.c 1998-07-21 07:10 H.J. Lu <hjl@gnu.org> * elf/sln.c: New file. * Makerules (symbolic-link-prog, symbolic-link-list): New macros. (install-clean-symbolic-link-list): New target. (install): Depend on install-clean-symbolic-link-list. (make-shlib-link): Changed for $(symbolic-link-list). * Makefile (install-symbolic-link): New target. (install): Depend on install-symbolic-link.
Diffstat (limited to 'elf/sln.c')
-rw-r--r--elf/sln.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/elf/sln.c b/elf/sln.c
new file mode 100644
index 0000000..a958bac
--- /dev/null
+++ b/elf/sln.c
@@ -0,0 +1,190 @@
+/* `sln' program to create symboblic links between files.
+ Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+
+#if !defined(S_ISDIR) && defined(S_IFDIR)
+#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
+#endif
+
+static int makesymlink __P ((const char *src, const char *dest));
+static int makesymlinks __P ((const char *file));
+
+int
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ switch (argc)
+ {
+ case 2:
+ return makesymlinks (argv [1]) == 0 ? 0 : 1;
+ break;
+
+ case 3:
+ return makesymlink (argv [1], argv [2]) == 0 ? 0 : 1;
+ break;
+
+ default:
+ printf ("Usage: %s src dest|file\n", argv [0]);
+ return 1;
+ break;
+ }
+}
+
+static int
+makesymlinks (file)
+ const char *file;
+{
+#ifndef PATH_MAX
+#define PATH_MAX 4095
+#endif
+ char buffer [PATH_MAX * 4];
+ int i, ret, len;
+ int lineno;
+ const char *src;
+ const char *dest;
+ const char *error;
+ FILE *fp;
+
+ fp = fopen (file, "r");
+ if (fp == NULL)
+ {
+ error = strerror (errno);
+ fprintf (stderr, "%s: file open error: %s\n", file, error);
+ return -1;
+ }
+
+ ret = 0;
+ lineno = 0;
+ while (fgets (buffer, sizeof (buffer) - 1, fp))
+ {
+ lineno++;
+ src = dest = NULL;
+ buffer [sizeof (buffer) - 1] = '\0';
+ len = strlen (buffer);
+ for (i = 0; i < len && isspace (buffer [i]); i++);
+ if (i >= len)
+ {
+ fprintf (stderr, "Fail to parse line %d: \"%s\"\n", lineno,
+ buffer);
+ ret--;
+ continue;
+ }
+
+ src = &buffer [i];
+ for (; i < len && !isspace (buffer [i]); i++);
+ if (i < len)
+ {
+ buffer [i++] = '\0';
+ for (; i < len && isspace (buffer [i]); i++);
+ if (i >= len)
+ {
+ fprintf (stderr, "No target in line %d: \"%s\"\n", lineno,
+ buffer);
+ ret--;
+ continue;
+ }
+ dest = &buffer [i];
+ for (; i < len && !isspace (buffer [i]); i++);
+ buffer [i] = '\0';
+ }
+ else
+ {
+ fprintf (stderr, "No target in line %d: \"%s\"\n", lineno,
+ buffer);
+ ret--;
+ continue;
+ }
+
+ if (makesymlink (src, dest))
+ {
+ fprintf (stderr, "Failed to make link from \"%s\" to \"%s\" in line %d\n",
+ src, dest, lineno);
+ ret--;
+ }
+ }
+ fclose (fp);
+
+ return ret;
+}
+
+static int
+makesymlink (src, dest)
+ const char *src;
+ const char *dest;
+{
+ struct stat stats;
+ const char *error;
+
+ /* Destination must not be a directory. */
+ if (lstat (dest, &stats) == 0)
+ {
+ if (S_ISDIR (stats.st_mode))
+ {
+ fprintf (stderr, "%s: destination must not be a directory\n",
+ dest);
+ return -1;
+ }
+ else if (unlink (dest) && errno != ENOENT)
+ {
+ fprintf (stderr, "%s: failed to remove the old destination\n",
+ dest);
+ return -1;
+ }
+ }
+ else if (errno != ENOENT)
+ {
+ error = strerror (errno);
+ fprintf (stderr, "%s: invalid destination: %s\n", dest, error);
+ return -1;
+ }
+
+#ifdef S_ISLNK
+ if (symlink (src, dest) == 0)
+#else
+ if (link (src, dest) == 0)
+#endif
+ {
+ /* Destination must exist by now. */
+ if (access (dest, F_OK))
+ {
+ error = strerror (errno);
+ unlink (dest);
+ fprintf (stderr, "Invalid link from \"%s\" to \"%s\": %s\n",
+ src, dest, error);
+ return -1;
+ }
+ return 0;
+ }
+ else
+ {
+ error = strerror (errno);
+ fprintf (stderr, "Invalid link from \"%s\" to \"%s\": %s\n",
+ src, dest, error);
+ return -1;
+ }
+}