/* makepath.c -- Ensure that a directory path exists.
- Copyright (C) 1990, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1997-1999, 2000, 2002-2003 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
# include <config.h>
#endif
-#if __GNUC__
-# define alloca __builtin_alloca
-#else
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
- # pragma alloca
-# else
-char *alloca ();
-# endif
-# endif
-#endif
+#include <alloca.h>
#include <stdio.h>
#include <sys/types.h>
# undef S_ISDIR
#endif
-#if !defined(S_ISDIR) && defined(S_IFDIR)
+#if !defined S_ISDIR && defined S_IFDIR
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
+#ifndef S_IRWXUGO
+# define S_IRWXUGO (S_IRWXU | S_IRWXG | S_IRWXO)
+#endif
+
#if STDC_HEADERS
# include <stdlib.h>
#endif
-#if HAVE_ERRNO_H
-# include <errno.h>
-#endif
+#include <errno.h>
#ifndef errno
extern int errno;
# endif
#endif
-#ifdef __MSDOS__
-typedef int uid_t;
-typedef int gid_t;
+#ifndef S_ISUID
+# define S_ISUID 04000
+#endif
+#ifndef S_ISGID
+# define S_ISGID 02000
+#endif
+#ifndef S_ISVTX
+# define S_ISVTX 01000
+#endif
+#ifndef S_IRUSR
+# define S_IRUSR 0200
+#endif
+#ifndef S_IWUSR
+# define S_IWUSR 0200
+#endif
+#ifndef S_IXUSR
+# define S_IXUSR 0100
#endif
-#include "save-cwd.h"
+#ifndef S_IRWXU
+# define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
+#endif
+
+#define WX_USR (S_IWUSR | S_IXUSR)
+
+/* Include this before libintl.h so we get our definition of PARAMS. */
#include "makepath.h"
-#include "error.h"
-void strip_trailing_slashes ();
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+
+#include "save-cwd.h"
+#include "dirname.h"
+#include "error.h"
+#include "quote.h"
#define CLEANUP_CWD \
do \
{ \
/* We're done operating on basename_dir. \
Restore working directory. */ \
- if (saved_cwd) \
+ if (do_chdir) \
{ \
- int fail = restore_cwd (&cwd, NULL, NULL); \
+ int _fail = restore_cwd (&cwd, NULL, NULL); \
free_cwd (&cwd); \
- if (fail) \
+ if (_fail) \
return 1; \
} \
} \
} \
while (0)
+/* Attempt to create directory DIR (aka DIRPATH) with the specified MODE.
+ If CREATED_DIR_P is non-NULL, set *CREATED_DIR_P to non-zero if this
+ function creates DIR and to zero otherwise. Give a diagnostic and
+ return non-zero if DIR cannot be created or cannot be determined to
+ exist already. Use DIRPATH in any diagnostic, not DIR.
+ Note that if DIR already exists, this function returns zero
+ (indicating success) and sets *CREATED_DIR_P to zero. */
+
+int
+make_dir (const char *dir, const char *dirpath, mode_t mode, int *created_dir_p)
+{
+ int fail = 0;
+ int created_dir;
+
+ created_dir = (mkdir (dir, mode) == 0);
+
+ if (!created_dir)
+ {
+ struct stat stats;
+ int saved_errno = errno;
+
+ /* The mkdir and stat calls below may appear to be reversed.
+ They are not. It is important to call mkdir first and then to
+ call stat (to distinguish the three cases) only if mkdir fails.
+ The alternative to this approach is to `stat' each directory,
+ then to call mkdir if it doesn't exist. But if some other process
+ were to create the directory between the stat & mkdir, the mkdir
+ would fail with EEXIST. */
+
+ if (stat (dir, &stats))
+ {
+ error (0, saved_errno, _("cannot create directory %s"),
+ quote (dirpath));
+ fail = 1;
+ }
+ else if (!S_ISDIR (stats.st_mode))
+ {
+ error (0, 0, _("%s exists but is not a directory"), quote (dirpath));
+ fail = 1;
+ }
+ else
+ {
+ /* DIR (aka DIRPATH) already exists and is a directory. */
+ }
+ }
+
+ if (created_dir_p)
+ *created_dir_p = created_dir;
+
+ return fail;
+}
+
/* Ensure that the directory ARGPATH exists.
- Remove any trailing slashes from ARGPATH before calling this function.
Create any leading directories that don't already exist, with
permissions PARENT_MODE.
Return 0 if ARGPATH exists as a directory with the proper
ownership and permissions when done, otherwise 1. */
-#if __STDC__
int
make_path (const char *argpath,
int mode,
gid_t group,
int preserve_existing,
const char *verbose_fmt_string)
-#else
-int
-make_path (argpath, mode, parent_mode, owner, group, preserve_existing,
- verbose_fmt_string)
- const char *argpath;
- int mode;
- int parent_mode;
- uid_t owner;
- gid_t group;
- int preserve_existing;
- const char *verbose_fmt_string;
-#endif
{
struct stat stats;
int retval = 0;
struct ptr_list *next;
};
struct ptr_list *p, *leading_dirs = NULL;
- int saved_cwd = 0;
+ int do_chdir; /* Whether to chdir before each mkdir. */
struct saved_cwd cwd;
char *basename_dir;
- int first_subdir = 1;
char *dirpath;
/* Temporarily relax umask in case it's overly restrictive. */
- int oldmask = umask (0);
+ mode_t oldmask = umask (0);
/* Make a copy of ARGPATH that we can scribble NULs on. */
dirpath = (char *) alloca (strlen (argpath) + 1);
/* If leading directories shouldn't be writable or executable,
or should have set[ug]id or sticky bits set and we are setting
their owners, we need to fix their permissions after making them. */
- if (((parent_mode & 0300) != 0300)
- || (owner != (uid_t) -1 && group != (gid_t) -1
- && (parent_mode & 07000) != 0))
+ if (((parent_mode & WX_USR) != WX_USR)
+ || ((owner != (uid_t) -1 || group != (gid_t) -1)
+ && (parent_mode & (S_ISUID | S_ISGID | S_ISVTX)) != 0))
{
- tmp_mode = 0700;
+ tmp_mode = S_IRWXU;
re_protect = 1;
}
else
re_protect = 0;
}
+ /* If we can record the current working directory, we may be able
+ to do the chdir optimization. */
+ do_chdir = !save_cwd (&cwd);
+
+ /* If we've saved the cwd and DIRPATH is an absolute pathname,
+ we must chdir to `/' in order to enable the chdir optimization.
+ So if chdir ("/") fails, turn off the optimization. */
+ if (do_chdir && *dirpath == '/' && chdir ("/") < 0)
+ do_chdir = 0;
+
slash = dirpath;
/* Skip over leading slashes. */
while (1)
{
+ int newly_created_dir;
+ int fail;
+
/* slash points to the leftmost unprocessed component of dirpath. */
basename_dir = slash;
if (slash == NULL)
break;
- if (first_subdir)
- {
- first_subdir = 0;
- saved_cwd = !save_cwd (&cwd);
- }
-
- /* If save_cwd could not record the current directory, then don't
- do the chdir optimization and resort to using full pathnames. */
-
- if (!saved_cwd)
+ /* If we're *not* doing chdir before each mkdir, then we have to refer
+ to the target using the full (multi-component) directory name. */
+ if (!do_chdir)
basename_dir = dirpath;
*slash = '\0';
- if (mkdir (basename_dir, tmp_mode))
+ fail = make_dir (basename_dir, dirpath, tmp_mode, &newly_created_dir);
+ if (fail)
{
- if (stat (basename_dir, &stats))
- {
- error (0, errno, "cannot create directory `%s'", dirpath);
- CLEANUP;
- return 1;
- }
- else if (!S_ISDIR (stats.st_mode))
+ CLEANUP;
+ return 1;
+ }
+
+ if (newly_created_dir)
+ {
+ if (verbose_fmt_string)
+ error (0, 0, verbose_fmt_string, quote (dirpath));
+
+ if ((owner != (uid_t) -1 || group != (gid_t) -1)
+ && chown (basename_dir, owner, group)
+#if defined AFS && defined EPERM
+ && errno != EPERM
+#endif
+ )
{
- error (0, 0, "`%s' exists but is not a directory", dirpath);
+ error (0, errno, _("cannot change owner and/or group of %s"),
+ quote (dirpath));
CLEANUP;
return 1;
}
- else
+
+ if (re_protect)
{
- /* DIRPATH already exists and is a directory. */
+ struct ptr_list *new = (struct ptr_list *)
+ alloca (sizeof (struct ptr_list));
+ new->dirname_end = slash;
+ new->next = leading_dirs;
+ leading_dirs = new;
}
}
- if (verbose_fmt_string != NULL)
- error (0, 0, verbose_fmt_string, dirpath);
-
- if (owner != (uid_t) -1 && group != (gid_t) -1
- && chown (basename_dir, owner, group)
-#if defined(AFS) && defined (EPERM)
- && errno != EPERM
-#endif
- )
- {
- error (0, errno, "%s", dirpath);
- CLEANUP;
- return 1;
- }
-
- if (re_protect)
- {
- struct ptr_list *new = (struct ptr_list *)
- alloca (sizeof (struct ptr_list));
- new->dirname_end = slash;
- new->next = leading_dirs;
- leading_dirs = new;
- }
-
/* If we were able to save the initial working directory,
then we can use chdir to change into each directory before
creating an entry in that directory. This avoids making
stat and mkdir process O(n^2) file name components. */
- if (saved_cwd && chdir (basename_dir) < 0)
+ if (do_chdir && chdir (basename_dir) < 0)
{
- error (0, errno, "cannot chdir to directory, %s", dirpath);
+ error (0, errno, _("cannot chdir to directory %s"),
+ quote (dirpath));
CLEANUP;
return 1;
}
slash++;
}
- if (!saved_cwd)
+ if (!do_chdir)
basename_dir = dirpath;
+ /* Done creating leading directories. Restore original umask. */
+ umask (oldmask);
+
/* We're done making leading directories.
Create the final component of the path. */
- /* The path could end in "/." or contain "/..", so test
- if we really have to create the directory. */
-
- if (stat (basename_dir, &stats) && mkdir (basename_dir, mode))
+ if (make_dir (basename_dir, dirpath, mode, NULL))
{
- error (0, errno, "cannot create directory `%s'", dirpath);
CLEANUP;
return 1;
}
- /* Done creating directories. Restore original umask. */
- umask (oldmask);
-
if (verbose_fmt_string != NULL)
- error (0, 0, verbose_fmt_string, dirpath);
+ error (0, 0, verbose_fmt_string, quote (dirpath));
- if (owner != (uid_t) -1 && group != (gid_t) -1)
+ if (owner != (uid_t) -1 || group != (gid_t) -1)
{
if (chown (basename_dir, owner, group)
#ifdef AFS
#endif
)
{
- error (0, errno, "cannot chown %s", dirpath);
- retval = 1;
- }
- /* chown may have turned off some permission bits we wanted. */
- if ((mode & 07000) != 0 && chmod (basename_dir, mode))
- {
- error (0, errno, "cannot chmod %s", dirpath);
+ error (0, errno, _("cannot change owner and/or group of %s"),
+ quote (dirpath));
retval = 1;
}
}
+ /* The above chown may have turned off some permission bits in MODE.
+ Another reason we may have to use chmod here is that mkdir(2) is
+ required to honor only the file permission bits. In particular,
+ it need not honor the `special' bits, so if MODE includes any
+ special bits, set them here. */
+ if ((mode & ~S_IRWXUGO)
+ && chmod (basename_dir, mode))
+ {
+ error (0, errno, _("cannot change permissions of %s"),
+ quote (dirpath));
+ retval = 1;
+ }
+
CLEANUP_CWD;
/* If the mode for leading directories didn't include owner "wx"
*(p->dirname_end) = '\0';
if (chmod (dirpath, parent_mode))
{
- error (0, errno, "%s", dirpath);
+ error (0, errno, "cannot change permissions of %s",
+ quote (dirpath));
retval = 1;
}
}
if (!S_ISDIR (stats.st_mode))
{
- error (0, 0, "`%s' exists but is not a directory", dirpath);
+ error (0, 0, _("%s exists but is not a directory"), quote (dirpath));
return 1;
}
On System V, users can give away files with chown and then not
be able to chmod them. So don't give files away. */
- if (owner != (uid_t) -1 && group != (gid_t) -1
+ if ((owner != (uid_t) -1 || group != (gid_t) -1)
&& chown (dirpath, owner, group)
#ifdef AFS
&& errno != EPERM
#endif
)
{
- error (0, errno, "%s", dirpath);
+ error (0, errno, _("cannot change owner and/or group of %s"),
+ quote (dirpath));
retval = 1;
}
if (chmod (dirpath, mode))
{
- error (0, errno, "%s", dirpath);
+ error (0, errno, _("cannot change permissions of %s"),
+ quote (dirpath));
retval = 1;
}
}
projects / gnulib.git / blobdiff