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authorPaul Eggert <eggert@cs.ucla.edu>2006-08-21 07:26:38 +0000
committerPaul Eggert <eggert@cs.ucla.edu>2006-08-21 07:26:38 +0000
commit0f7a044109b860443ecaa4f8a37652b1b4423057 (patch)
treeb5834ed9867213221a2636e0fa7e8da178749a76 /lib/mkancesdirs.c
parent11fd62b0080ce376b26241bd789b7e7390befef6 (diff)
downloadcoreutils-0f7a044109b860443ecaa4f8a37652b1b4423057.tar.xz
Remove from CVS, since the bootstrap script generates them automatically.
Diffstat (limited to 'lib/mkancesdirs.c')
-rw-r--r--lib/mkancesdirs.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/lib/mkancesdirs.c b/lib/mkancesdirs.c
deleted file mode 100644
index 473774236..000000000
--- a/lib/mkancesdirs.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/* Make a file's ancestor directories.
-
- Copyright (C) 2006 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-/* Written by Paul Eggert. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "mkancesdirs.h"
-
-#include <errno.h>
-#include <sys/stat.h>
-
-#include "dirname.h"
-#include "stat-macros.h"
-
-/* Return 0 if FILE is a directory, otherwise -1 (setting errno). */
-
-static int
-test_dir (char const *file)
-{
- struct stat st;
- if (stat (file, &st) == 0)
- {
- if (S_ISDIR (st.st_mode))
- return 0;
- errno = ENOTDIR;
- }
- return -1;
-}
-
-/* Ensure that the ancestor directories of FILE exist, using an
- algorithm that should work even if two processes execute this
- function in parallel. Temporarily modify FILE by storing '\0'
- bytes into it, to access the ancestor directories.
-
- Create any ancestor directories that don't already exist, by
- invoking MAKE_DIR (ANCESTOR, MAKE_DIR_ARG). This function should
- return zero if successful, -1 (setting errno) otherwise.
-
- If successful, return 0 with FILE set back to its original value;
- otherwise, return -1 (setting errno), storing a '\0' into *FILE so
- that it names the ancestor directory that had problems. */
-
-int
-mkancesdirs (char *file,
- int (*make_dir) (char const *, void *),
- void *make_dir_arg)
-{
- /* This algorithm is O(N**2) but in typical practice the fancier
- O(N) algorithms are slower. */
-
- /* Address of the previous directory separator that follows an
- ordinary byte in a file name in the left-to-right scan, or NULL
- if no such separator precedes the current location P. */
- char *sep = NULL;
-
- char const *prefix_end = file + FILE_SYSTEM_PREFIX_LEN (file);
- char *p;
- char c;
-
- /* Search backward through FILE using mkdir to create the
- furthest-away ancestor that is needed. This loop isn't needed
- for correctness, but typically ancestors already exist so this
- loop speeds things up a bit.
-
- This loop runs a bit faster if errno initially contains an error
- number corresponding to a failed access to FILE. However, things
- work correctly regardless of errno's initial value. */
-
- for (p = last_component (file); prefix_end < p; p--)
- if (ISSLASH (*p) && ! ISSLASH (p[-1]))
- {
- *p = '\0';
-
- if (errno == ENOENT && make_dir (file, make_dir_arg) == 0)
- {
- *p = '/';
- break;
- }
-
- if (errno != ENOENT)
- {
- if (test_dir (file) == 0)
- {
- *p = '/';
- break;
- }
- if (errno != ENOENT)
- return -1;
- }
-
- *p = '/';
- }
-
- /* Scan forward through FILE, creating directories along the way.
- Try mkdir before stat, so that the procedure works even when two
- or more processes are executing it in parallel. */
-
- while ((c = *p++))
- if (ISSLASH (*p))
- {
- if (! ISSLASH (c))
- sep = p;
- }
- else if (ISSLASH (c) && *p && sep)
- {
- *sep = '\0';
- if (make_dir (file, make_dir_arg) != 0 && test_dir (file) != 0)
- return -1;
- *sep = '/';
- }
-
-
- return 0;
-}