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| author | Dan McGee <dan@archlinux.org> | 2011-06-14 17:01:08 +0200 |
|---|---|---|
| committer | Dan McGee <dan@archlinux.org> | 2011-06-14 17:01:08 +0200 |
| commit | ee015f086f3c40390659bbc0129b7c08ffd0ed5f (patch) | |
| tree | b2ba33041450fd5c5fb226649b88534fdac60ff1 /lib/libalpm/util.h | |
| parent | be972767358e6dfbb08686555d8e2c0176a55106 (diff) | |
| download | pacman-ee015f086f3c40390659bbc0129b7c08ffd0ed5f.tar.gz pacman-ee015f086f3c40390659bbc0129b7c08ffd0ed5f.tar.xz | |
Ensure handle is valid and pm_errno is reset when calling into API
We didn't do due diligence before and ensure prior pm_errno values
weren't influencing what happened in further ALPM calls. I observed one
case of early setup code setting pm_errno to PM_ERR_WRONG_ARGS and that
flag persisting the entire time we were calling library code.
Add a new CHECK_HANDLE() macro that does two things: 1) ensures the
handle variable passed to it is non-NULL and 2) clears any existing
pm_errno flag set on the handle. This macro can replace many places we
used the ASSERT(handle != NULL, ...) pattern before.
Several other other places only need a simple 'set to zero' of the
pm_errno field.
Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib/libalpm/util.h')
| -rw-r--r-- | lib/libalpm/util.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/libalpm/util.h b/lib/libalpm/util.h index e5fefe9e..0549c81e 100644 --- a/lib/libalpm/util.h +++ b/lib/libalpm/util.h @@ -71,6 +71,8 @@ #define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON) +#define CHECK_HANDLE(handle, action) do { if(!(handle)) { action; } (handle)->pm_errno = 0; } while(0) + /** * Used as a buffer/state holder for _alpm_archive_fgets(). */ |