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2000-07-13  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/getcwd.c (__getcwd): Correctly handle
	getcwd (NULL, size) with size > 0.
	Fixes PR libc/1788, reported by John Buddery
	<jvb@cyberscience.com>.

2000-07-13  Andreas Jaeger  <aj@suse.de>

	* posix/Makefile: Remove build rules for libposix.
This commit is contained in:
Ulrich Drepper
2000-07-13 17:37:44 +00:00
parent 964b082efd
commit 9cd865e0ce
2 changed files with 17 additions and 4 deletions
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11
ChangeLog
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@@ -1,3 +1,14 @@
2000-07-13 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/getcwd.c (__getcwd): Correctly handle
getcwd (NULL, size) with size > 0.
Fixes PR libc/1788, reported by John Buddery
<jvb@cyberscience.com>.
2000-07-13 Andreas Jaeger <aj@suse.de>
* posix/Makefile: Remove build rules for libposix.
2000-07-13 Andreas Schwab <schwab@suse.de> 2000-07-13 Andreas Schwab <schwab@suse.de>
* sysdeps/generic/glob.c (glob): Fix memory leak. * sysdeps/generic/glob.c (glob): Fix memory leak.

10
sysdeps/unix/sysv/linux/getcwd.c
View File

@@ -103,7 +103,7 @@ __getcwd (char *buf, size_t size)
retval = INLINE_SYSCALL (getcwd, 2, CHECK_STRING (path), alloc_size); retval = INLINE_SYSCALL (getcwd, 2, CHECK_STRING (path), alloc_size);
if (retval >= 0) if (retval >= 0)
{ {
if (buf == NULL) if (buf == NULL && size == 0)
{ {
buf = realloc (path, (size_t) retval); buf = realloc (path, (size_t) retval);
if (buf == NULL) if (buf == NULL)
@@ -115,8 +115,9 @@ __getcwd (char *buf, size_t size)
# if __ASSUME_GETCWD_SYSCALL # if __ASSUME_GETCWD_SYSCALL
/* It should never happen that the `getcwd' syscall failed because /* It should never happen that the `getcwd' syscall failed because
the buffer is too small if we allocated the buffer outself. */ the buffer is too small if we allocated the buffer outselves
assert (errno != ERANGE || buf != NULL); large enough. */
assert (errno != ERANGE || buf != NULL || size != 0);
if (buf == NULL) if (buf == NULL)
free (path); free (path);
@@ -153,8 +154,9 @@ __getcwd (char *buf, size_t size)
} }
path[n] = '\0'; path[n] = '\0';
if (buf == NULL) if (buf == NULL && size == 0)
{ {
/* Ensure that the buffer is only as large as necessary. */
buf = realloc (path, (size_t) n + 1); buf = realloc (path, (size_t) n + 1);
if (buf == NULL) if (buf == NULL)
/* `relloc' failed but we still have the original string. */ /* `relloc' failed but we still have the original string. */