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| author | Ulrich Drepper <drepper@redhat.com> | 2000-07-13 17:37:44 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-07-13 17:37:44 +0000 |
| commit | 9cd865e0ce0563d875b818d6d8e7032dc6d2817f (patch) | |
| tree | 3daecabcef01e17a004ef5ca8754511e783dc257 /sysdeps/unix/sysv/linux/getcwd.c | |
| parent | 964b082efd3296424aa37613136d7a22efd43e69 (diff) | |
| download | glibc-9cd865e0ce0563d875b818d6d8e7032dc6d2817f.tar.gz glibc-9cd865e0ce0563d875b818d6d8e7032dc6d2817f.tar.xz glibc-9cd865e0ce0563d875b818d6d8e7032dc6d2817f.zip | |
Update.
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.
Diffstat (limited to 'sysdeps/unix/sysv/linux/getcwd.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/getcwd.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/getcwd.c b/sysdeps/unix/sysv/linux/getcwd.c index 6c68955fdb..417841664e 100644 --- a/sysdeps/unix/sysv/linux/getcwd.c +++ b/sysdeps/unix/sysv/linux/getcwd.c @@ -103,7 +103,7 @@ __getcwd (char *buf, size_t size) retval = INLINE_SYSCALL (getcwd, 2, CHECK_STRING (path), alloc_size); if (retval >= 0) { - if (buf == NULL) + if (buf == NULL && size == 0) { buf = realloc (path, (size_t) retval); if (buf == NULL) @@ -115,8 +115,9 @@ __getcwd (char *buf, size_t size) # if __ASSUME_GETCWD_SYSCALL /* It should never happen that the `getcwd' syscall failed because - the buffer is too small if we allocated the buffer outself. */ - assert (errno != ERANGE || buf != NULL); + the buffer is too small if we allocated the buffer outselves + large enough. */ + assert (errno != ERANGE || buf != NULL || size != 0); if (buf == NULL) free (path); @@ -153,8 +154,9 @@ __getcwd (char *buf, size_t size) } 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); if (buf == NULL) /* `relloc' failed but we still have the original string. */ |