Update.
* sysdeps/posix/getcwd.c: Correct last patch. Handle getcwd (NULL, != 0) correctly.
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@ -1,5 +1,8 @@
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1999-07-07 Ulrich Drepper <drepper@cygnus.com>
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1999-07-07 Ulrich Drepper <drepper@cygnus.com>
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* sysdeps/posix/getcwd.c: Correct last patch. Handle getcwd
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(NULL, != 0) correctly.
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* elf/dl-load.c: Use a few more __builtin_expect.
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* elf/dl-load.c: Use a few more __builtin_expect.
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* sysdeps/posix/getcwd.c: When resizing buffer make sure new size
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* sysdeps/posix/getcwd.c: When resizing buffer make sure new size
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@ -224,6 +224,7 @@ __getcwd (buf, size)
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register char *pathp;
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register char *pathp;
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struct stat st;
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struct stat st;
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int prev_errno = errno;
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int prev_errno = errno;
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size_t allocated = size;
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if (size == 0)
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if (size == 0)
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{
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{
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@ -233,19 +234,19 @@ __getcwd (buf, size)
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return NULL;
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return NULL;
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}
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}
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size = PATH_MAX + 1;
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allocated = PATH_MAX + 1;
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}
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}
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if (buf != NULL)
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if (buf != NULL)
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path = buf;
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path = buf;
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else
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else
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{
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{
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path = malloc (size);
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path = malloc (allocated);
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if (path == NULL)
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if (path == NULL)
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return NULL;
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return NULL;
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}
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}
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pathp = path + size;
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pathp = path + allocated;
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*--pathp = '\0';
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*--pathp = '\0';
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if (__lstat (".", &st) < 0)
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if (__lstat (".", &st) < 0)
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@ -362,7 +363,7 @@ __getcwd (buf, size)
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if ((size_t) (pathp - path) <= namlen)
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if ((size_t) (pathp - path) <= namlen)
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{
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{
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if (buf != NULL)
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if (size != 0)
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{
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{
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(void) __closedir (dirstream);
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(void) __closedir (dirstream);
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__set_errno (ERANGE);
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__set_errno (ERANGE);
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@ -371,20 +372,23 @@ __getcwd (buf, size)
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else
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else
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{
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{
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char *tmp;
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char *tmp;
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size_t oldsize = allocated;
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size = 2 * MAX (size, namlen);
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allocated = 2 * MAX (allocated, namlen);
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tmp = realloc (path, size);
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tmp = realloc (path, allocated);
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if (tmp == NULL)
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if (tmp == NULL)
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{
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{
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(void) __closedir (dirstream);
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(void) __closedir (dirstream);
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__set_errno (ENOMEM);/* closedir might have changed it.*/
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__set_errno (ENOMEM);/* closedir might have changed it.*/
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goto lose;
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goto lose;
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}
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}
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pathp = &tmp[pathp - path + size / 2];
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path = tmp;
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/* Move current contents up to the end of the buffer.
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/* Move current contents up to the end of the buffer.
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This is guaranteed to be non-overlapping. */
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This is guaranteed to be non-overlapping. */
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memcpy (pathp, pathp - size / 2, path + size - pathp);
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pathp = memcpy (tmp + allocated - (path + oldsize - pathp),
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tmp + (pathp - path),
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path + oldsize - pathp);
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path = tmp;
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}
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}
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}
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}
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pathp -= namlen;
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pathp -= namlen;
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@ -397,13 +401,13 @@ __getcwd (buf, size)
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thisino = dotino;
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thisino = dotino;
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}
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}
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if (pathp == &path[size - 1])
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if (pathp == &path[allocated - 1])
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*--pathp = '/';
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*--pathp = '/';
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if (dotlist != dots)
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if (dotlist != dots)
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free ((__ptr_t) dotlist);
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free ((__ptr_t) dotlist);
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memmove (path, pathp, path + size - pathp);
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memmove (path, pathp, path + allocated - pathp);
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/* Restore errno on successful return. */
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/* Restore errno on successful return. */
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__set_errno (prev_errno);
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__set_errno (prev_errno);
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