[PATCH 22/31] virPCIDeviceGetVPD: Fix multiple error handling bugs
- fix passing of 'errno' to 'virReportSystemError'
The 'open' syscall returns '-1' and sets 'errno' on failure. The
code
passed '-fd' as 'errno' rather than errno itself, thus always reporting
EPERM.
- don't overwrite errors when closing FD
Use VIR_AUTOCLOSE to avoid overwriting the errors from virPCIVPDParse.
Signed-off-by: Peter Krempa <pkrempa(a)redhat.com>
---
src/util/virpci.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)
diff --git a/src/util/virpci.c b/src/util/virpci.c
index 99e6e6cbb1..780b4f9eec 100644
--- a/src/util/virpci.c
+++ b/src/util/virpci.c
@@ -3103,28 +3103,21 @@ virPCIDeviceHasVPD(virPCIDevice *dev)
virPCIVPDResource *
virPCIDeviceGetVPD(virPCIDevice *dev)
{
- g_autofree char *vpdPath = NULL;
- int fd;
- g_autoptr(virPCIVPDResource) res = NULL;
+ g_autofree char *vpdPath = virPCIFile(dev->name, "vpd");
+ VIR_AUTOCLOSE fd = -1;
- vpdPath = virPCIFile(dev->name, "vpd");
if (!virPCIDeviceHasVPD(dev)) {
virReportError(VIR_ERR_INTERNAL_ERROR, _("Device %1$s does not have a
VPD"),
- virPCIDeviceGetName(dev));
- return NULL;
- }
- if ((fd = open(vpdPath, O_RDONLY)) < 0) {
- virReportSystemError(-fd, _("Failed to open a VPD file
'%1$s'"), vpdPath);
+ virPCIDeviceGetName(dev));
return NULL;
}
- res = virPCIVPDParse(fd);
- if (VIR_CLOSE(fd) < 0) {
- virReportSystemError(errno, _("Unable to close the VPD file, fd:
%1$d"), fd);
+ if ((fd = open(vpdPath, O_RDONLY)) < 0) {
+ virReportSystemError(errno, _("Failed to open a VPD file
'%1$s'"), vpdPath);
return NULL;
}
- return g_steal_pointer(&res);
+ return virPCIVPDParse(fd);
}
#else
--
2.43.0