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authorUlrich Drepper <drepper@redhat.com>2003-11-07 23:00:00 +0000
committerUlrich Drepper <drepper@redhat.com>2003-11-07 23:00:00 +0000
commitca10f33858adef0c20f8bcbf65b49f920e3274e9 (patch)
treedff8ac42acd1b9e8e289058bc3a0cab2f907ae3b /io/ftw.c
parentc685b2b0b4e86f488ead098816292684362e55f7 (diff)
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Update.
2003-11-07 Jakub Jelinek <jakub@redhat.com> * io/ftw.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define. (ftw_dir, ftw_startup): Add __attribute ((noinline)). (NFTW_OLD_NAME, NFTW_NEW_NAME): New functions. (NFTW_NAME): Only define if !_LIBC, add versioned_symbol and compat_symbol. * io/ftw64.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define. * io/Versions (libc): Export nftw@@GLIBC_2.3.3 and nftw64@@GLIBC_2.3.3. * io/ftw.h (FTW_ACTIONRETVAL): New flag. (FTW_CONTINUE, FTW_STOP, FTW_SKIP_SUBTREE, FTW_SKIP_SIBLINGS): New. * io/ftw.c (ftw_dir): Add old_dir argument. Clear result if it was FTW_SKIP_SIBLINGS after processing all dir entries. Change cwd back if old_dir != NULL. (process_entry): Adjust caller. Don't change cwd back here. Change FTW_SKIP_SUBTREE result to 0. (ftw_startup): Adjust ftw_dir caller. Clear result if it was FTW_SKIP_SUBTREE or FTW_SKIP_SIBLINGS. * io/ftwtest.c (skip_subtree, skip_siblings): New variables. (options, main): Add --skip-subtree and --skip-siblings options. (cb): Use return FTW_CONTINUE instead of return 0. Handle --skip-subtree and --skip-siblings. * io/ftwtest-sh: Add tests for FTW_ACTIONRETVAL. * manual/filesys.texi: Document FTW_ACTIONRETVAL.
Diffstat (limited to 'io/ftw.c')
-rw-r--r--io/ftw.c112
1 files changed, 85 insertions, 27 deletions
diff --git a/io/ftw.c b/io/ftw.c
index 6d5cedf63e..c4d2157bd9 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -135,6 +135,8 @@ int rpl_lstat (const char *, struct stat *);
#ifndef FTW_NAME
# define FTW_NAME ftw
# define NFTW_NAME nftw
+# define NFTW_OLD_NAME __old_nftw
+# define NFTW_NEW_NAME __new_nftw
# define INO_T ino_t
# define STAT stat
# ifdef _LIBC
@@ -217,7 +219,8 @@ static const int ftw_arr[] =
/* Forward declarations of local functions. */
-static int ftw_dir (struct ftw_data *data, struct STAT *st) internal_function;
+static int ftw_dir (struct ftw_data *data, struct STAT *st,
+ struct dir_data *old_dir) internal_function;
static int
@@ -415,43 +418,24 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
|| (!find_object (data, &st)
/* Remember the object. */
&& (result = add_object (data, &st)) == 0))
- {
- result = ftw_dir (data, &st);
-
- if (result == 0 && (data->flags & FTW_CHDIR))
- {
- /* Change back to the parent directory. */
- int done = 0;
- if (dir->stream != NULL)
- if (__fchdir (dirfd (dir->stream)) == 0)
- done = 1;
-
- if (!done)
- {
- if (data->ftw.base == 1)
- {
- if (__chdir ("/") < 0)
- result = -1;
- }
- else
- if (__chdir ("..") < 0)
- result = -1;
- }
- }
- }
+ result = ftw_dir (data, &st, dir);
}
else
result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],
&data->ftw);
}
+ if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SUBTREE)
+ result = 0;
+
return result;
}
static int
+__attribute ((noinline))
internal_function
-ftw_dir (struct ftw_data *data, struct STAT *st)
+ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
{
struct dir_data dir;
struct dirent64 *d;
@@ -550,6 +534,9 @@ fail:
__set_errno (save_err);
}
+ if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SIBLINGS)
+ result = 0;
+
/* Prepare the return, revert the `struct FTW' information. */
data->dirbuf[data->ftw.base - 1] = '\0';
--data->ftw.level;
@@ -559,11 +546,37 @@ fail:
if (result == 0 && (data->flags & FTW_DEPTH))
result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);
+ if (old_dir
+ && (data->flags & FTW_CHDIR)
+ && (result == 0
+ || ((data->flags & FTW_ACTIONRETVAL)
+ && (result != -1 && result != FTW_STOP))))
+ {
+ /* Change back to the parent directory. */
+ int done = 0;
+ if (old_dir->stream != NULL)
+ if (__fchdir (dirfd (old_dir->stream)) == 0)
+ done = 1;
+
+ if (!done)
+ {
+ if (data->ftw.base == 1)
+ {
+ if (__chdir ("/") < 0)
+ result = -1;
+ }
+ else
+ if (__chdir ("..") < 0)
+ result = -1;
+ }
+ }
+
return result;
}
static int
+__attribute ((noinline))
internal_function
ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
int flags)
@@ -683,7 +696,7 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
result = add_object (&data, &st);
if (result == 0)
- result = ftw_dir (&data, &st);
+ result = ftw_dir (&data, &st, NULL);
}
else
{
@@ -693,6 +706,10 @@ ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
&data.ftw);
}
}
+
+ if ((flags & FTW_ACTIONRETVAL)
+ && (result == FTW_SKIP_SUBTREE || result == FTW_SKIP_SIBLINGS))
+ result = 0;
}
/* Return to the start directory (if necessary). */
@@ -726,6 +743,7 @@ FTW_NAME (path, func, descriptors)
return ftw_startup (path, 0, func, descriptors, 0);
}
+#ifndef _LIBC
int
NFTW_NAME (path, func, descriptors, flags)
const char *path;
@@ -735,3 +753,43 @@ NFTW_NAME (path, func, descriptors, flags)
{
return ftw_startup (path, 1, func, descriptors, flags);
}
+#else
+
+#include <shlib-compat.h>
+
+int
+NFTW_NEW_NAME (path, func, descriptors, flags)
+ const char *path;
+ NFTW_FUNC_T func;
+ int descriptors;
+ int flags;
+{
+ if (flags
+ & ~(FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH | FTW_ACTIONRETVAL))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+ return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);
+
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
+
+/* Older nftw* version just ignored all unknown flags. */
+
+int
+NFTW_OLD_NAME (path, func, descriptors, flags)
+ const char *path;
+ NFTW_FUNC_T func;
+ int descriptors;
+ int flags;
+{
+ flags &= (FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH);
+ return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
+#endif
+#endif