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mdadm/SOURCES/0120-mdadm-Manage.c-fix-cov...

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From 1b4b73fd535a6487075e98f620454ff2e13b5240 Mon Sep 17 00:00:00 2001
From: Nigel Croxon <ncroxon@redhat.com>
Date: Wed, 10 Jul 2024 08:55:08 -0400
Subject: [PATCH 120/157] mdadm: Manage.c fix coverity issues
Fixing the following coding errors the coverity tools found:
* Event parameter_hidden: declaration hides parameter "dv".
* Event leaked_storage: Variable "mdi" going out of scope leaks the storage
it points to.
* Event overwrite_var: Overwriting "mdi" in "mdi = mdi->devs" leaks the
storage that "mdi" points to.
* Event leaked_handle: Handle variable "lfd" going out of scope leaks
the handle.
* Event leaked_handle: Returning without closing handle "fd" leaks it.
* Event fixed_size_dest: You might overrun the 32-character fixed-sizei
string "devnm" by copying the return value of "fd2devnm" without
checking the length.
* Event fixed_size_dest: You might overrun the 32-character fixed-size
string "nm" by copying "nmp" without checking the length.
* Event fixed_size_dest: You might overrun the 32-character fixed-size
string "devnm" by copying the return value of "fd2devnm" without
checking the length.
* Event assigned_value: Assigning value "-1" to "tfd" here, but that
stored value is overwritten before it can be used.
Signed-off-by: Nigel Croxon <ncroxon@redhat.com>
---
Manage.c | 149 ++++++++++++++++++++++++++-----------------------------
1 file changed, 71 insertions(+), 78 deletions(-)
diff --git a/Manage.c b/Manage.c
index 5db72b77..aa5e80b2 100644
--- a/Manage.c
+++ b/Manage.c
@@ -56,7 +56,7 @@ int Manage_ro(char *devname, int fd, int readonly)
vers[9] = '-';
sysfs_set_str(mdi, NULL, "metadata_version", vers);
- close(fd);
+ close_fd(&fd);
rv = sysfs_set_str(mdi, NULL, "array_state", "readonly");
if (rv < 0) {
@@ -165,7 +165,7 @@ int Manage_run(char *devname, int fd, struct context *c)
pr_err("Cannot find %s in sysfs!!\n", devname);
return 1;
}
- strcpy(nm, nmp);
+ snprintf(nm, sizeof(nm), "%s", nmp);
return IncrementalScan(c, nm);
}
@@ -187,7 +187,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
if (will_retry && verbose == 0)
verbose = -1;
- strcpy(devnm, fd2devnm(fd));
+ snprintf(devnm, sizeof(devnm), "%s", fd2devnm(fd));
/* Get EXCL access first. If this fails, then attempting
* to stop is probably a bad idea.
*/
@@ -195,7 +195,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
if (mdi && is_subarray(mdi->text_version))
sysfs_get_container_devnm(mdi, container);
- close(fd);
+ close_fd(&fd);
count = 5;
while (((fd = ((devname[0] == '/')
?open(devname, O_RDONLY|O_EXCL)
@@ -206,14 +206,12 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
* is a container, so we might be racing with mdmon, so
* retry for a bit.
*/
- if (fd >= 0)
- close(fd);
+ close_fd(&fd);
flush_mdmon(container);
count--;
}
if (fd < 0 || strcmp(fd2devnm(fd), devnm) != 0) {
- if (fd >= 0)
- close(fd);
+ close_fd(&fd);
if (verbose >= 0)
pr_err("Cannot get exclusive access to %s:Perhaps a running process, mounted filesystem or active volume group?\n",
devname);
@@ -228,7 +226,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
is_subarray(mdi->text_version)) {
int err;
/* This is mdmon managed. */
- close(fd);
+ close_fd(&fd);
/* As we had an O_EXCL open, any use of the device
* which blocks STOP_ARRAY is probably a transient use,
@@ -430,8 +428,7 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
break;
sysfs_wait(scfd, &delay);
}
- if (scfd >= 0)
- close(scfd);
+ close_fd(&scfd);
}
done:
@@ -469,6 +466,7 @@ done:
map_unlock(&map);
out:
sysfs_free(mdi);
+ close_fd(&fd);
return rv;
}
@@ -664,7 +662,7 @@ int attempt_re_add(int fd, int tfd, struct mddev_dev *dv,
devname, verbose, 0, NULL);
if (rv == 0)
rv = dev_st->ss->store_super(dev_st, tfd);
- close(tfd);
+ close_fd(&tfd);
if (rv != 0) {
pr_err("failed to update superblock during re-add\n");
return -1;
@@ -766,15 +764,15 @@ mdadm_status_t manage_add_external(struct supertype *st, int fd, char *disk_name
rv = MDADM_STATUS_SUCCESS;
out:
- close(container_fd);
+ close_fd(&container_fd);
dev_policy_free(pols);
if (sra)
sysfs_free(sra);
- if (rv != MDADM_STATUS_SUCCESS && is_fd_valid(disk_fd))
+ if (rv != MDADM_STATUS_SUCCESS)
/* Metadata handler records this descriptor, so release it only on failure. */
- close(disk_fd);
+ close_fd(&disk_fd);
if (st->sb)
st->ss->free_super(st);
@@ -845,10 +843,10 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
continue;
if (tst->ss->load_super(tst, dfd,
NULL)) {
- close(dfd);
+ close_fd(&dfd);
continue;
}
- close(dfd);
+ close_fd(&dfd);
break;
}
/* FIXME this is a bad test to be using */
@@ -1100,7 +1098,8 @@ int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv,
*/
int ret;
char devnm[32];
- strcpy(devnm, fd2devnm(fd));
+
+ snprintf(devnm, sizeof(devnm), "%s", fd2devnm(fd));
lfd = open_dev_excl(devnm);
if (lfd < 0) {
pr_err("Cannot get exclusive access to container - odd\n");
@@ -1134,13 +1133,13 @@ int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv,
if (ret == 0) {
pr_err("%s is not a member, cannot remove.\n",
dv->devname);
- close(lfd);
+ close_fd(&lfd);
return -1;
}
if (ret >= 2) {
pr_err("%s is still in use, cannot remove.\n",
dv->devname);
- close(lfd);
+ close_fd(&lfd);
return -1;
}
}
@@ -1157,26 +1156,27 @@ int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv,
/* Old kernels rejected this if no personality
* is registered */
struct mdinfo *sra = sysfs_read(fd, NULL, GET_DEVS);
- struct mdinfo *dv = NULL;
- if (sra)
- dv = sra->devs;
- for ( ; dv ; dv=dv->next)
- if (dv->disk.major == (int)major(rdev) &&
- dv->disk.minor == (int)minor(rdev))
- break;
- if (dv)
- err = sysfs_set_str(sra, dv,
- "state", "remove");
- else
+ struct mdinfo *dev = NULL;
+
+ if (!sra) {
err = -1;
- sysfs_free(sra);
+ } else {
+ for (dev = sra->devs; dev ; dev = dev->next)
+ if (dev->disk.major == (int)major(rdev) &&
+ dev->disk.minor == (int)minor(rdev))
+ break;
+
+ if (dev)
+ err = sysfs_set_str(sra, dev,
+ "state", "remove");
+ sysfs_free(sra);
+ }
}
}
if (err) {
pr_err("hot remove failed for %s: %s\n", dv->devname,
strerror(errno));
- if (lfd >= 0)
- close(lfd);
+ close_fd(&lfd);
return -1;
}
if (tst->ss->external) {
@@ -1190,13 +1190,13 @@ int Manage_remove(struct supertype *tst, int fd, struct mddev_dev *dv,
if (!devnm) {
pr_err("unable to get container name\n");
+ close_fd(&lfd);
return -1;
}
ping_manager(devnm);
}
- if (lfd >= 0)
- close(lfd);
+ close_fd(&lfd);
if (verbose >= 0)
pr_err("hot removed %s from %s\n",
dv->devname, devname);
@@ -1218,7 +1218,7 @@ int Manage_replace(struct supertype *tst, int fd, struct mddev_dev *dv,
if (!mdi || !mdi->devs) {
pr_err("Cannot find status of %s to enable replacement - strange\n",
devname);
- return -1;
+ goto abort;
}
for (di = mdi->devs; di; di = di->next)
if (di->disk.major == (int)major(rdev) &&
@@ -1229,16 +1229,14 @@ int Manage_replace(struct supertype *tst, int fd, struct mddev_dev *dv,
if (di->disk.raid_disk < 0) {
pr_err("%s is not active and so cannot be replaced.\n",
dv->devname);
- sysfs_free(mdi);
- return -1;
+ goto abort;
}
rv = sysfs_set_str(mdi, di,
"state", "want_replacement");
if (rv) {
- sysfs_free(mdi);
pr_err("Failed to request replacement for %s\n",
dv->devname);
- return -1;
+ goto abort;
}
if (verbose >= 0)
pr_err("Marked %s (device %d in %s) for replacement\n",
@@ -1252,11 +1250,13 @@ int Manage_replace(struct supertype *tst, int fd, struct mddev_dev *dv,
dv->disposition = 'w';
dv->used = di->disk.raid_disk;
}
+ sysfs_free(mdi);
return 1;
}
- sysfs_free(mdi);
pr_err("%s not found in %s so cannot --replace it\n",
dv->devname, devname);
+abort:
+ sysfs_free(mdi);
return -1;
}
@@ -1269,7 +1269,7 @@ int Manage_with(struct supertype *tst, int fd, struct mddev_dev *dv,
if (!mdi || !mdi->devs) {
pr_err("Cannot find status of %s to enable replacement - strange\n",
devname);
- return -1;
+ goto abort;
}
for (di = mdi->devs; di; di = di->next)
if (di->disk.major == (int)major(rdev) &&
@@ -1280,31 +1280,30 @@ int Manage_with(struct supertype *tst, int fd, struct mddev_dev *dv,
if (di->disk.state & (1<<MD_DISK_FAULTY)) {
pr_err("%s is faulty and cannot be a replacement\n",
dv->devname);
- sysfs_free(mdi);
- return -1;
+ goto abort;
}
if (di->disk.raid_disk >= 0) {
pr_err("%s is active and cannot be a replacement\n",
dv->devname);
- sysfs_free(mdi);
- return -1;
+ goto abort;
}
rv = sysfs_set_num(mdi, di,
"slot", dv->used);
if (rv) {
- sysfs_free(mdi);
pr_err("Failed to set %s as preferred replacement.\n",
dv->devname);
- return -1;
+ goto abort;
}
if (verbose >= 0)
pr_err("Marked %s in %s as replacement for device %d\n",
dv->devname, devname, dv->used);
+ sysfs_free(mdi);
return 1;
}
- sysfs_free(mdi);
pr_err("%s not found in %s so cannot make it preferred replacement\n",
dv->devname, devname);
+abort:
+ sysfs_free(mdi);
return -1;
}
@@ -1324,6 +1323,7 @@ bool is_remove_safe(mdu_array_info_t *array, const int fd, char *devname, const
{
dev_t devid = devnm2devid(devname + 5);
struct mdinfo *mdi = sysfs_read(fd, NULL, GET_DEVS | GET_DISKS | GET_STATE);
+ struct mdinfo *disk;
if (!mdi) {
if (verbose)
@@ -1333,14 +1333,14 @@ bool is_remove_safe(mdu_array_info_t *array, const int fd, char *devname, const
char *avail = xcalloc(array->raid_disks, sizeof(char));
- for (mdi = mdi->devs; mdi; mdi = mdi->next) {
- if (mdi->disk.raid_disk < 0)
+ for (disk = mdi->devs; disk; disk = mdi->next) {
+ if (disk->disk.raid_disk < 0)
continue;
- if (!(mdi->disk.state & (1 << MD_DISK_SYNC)))
+ if (!(disk->disk.state & (1 << MD_DISK_SYNC)))
continue;
- if (makedev(mdi->disk.major, mdi->disk.minor) == devid)
+ if (makedev(disk->disk.major, disk->disk.minor) == devid)
continue;
- avail[mdi->disk.raid_disk] = 1;
+ avail[disk->disk.raid_disk] = 1;
}
sysfs_free(mdi);
@@ -1550,7 +1550,7 @@ int Manage_subdevs(char *devname, int fd,
rdev = makedev(mj,mn);
found = 1;
}
- close(sysfd);
+ close_fd(&sysfd);
sysfd = -1;
}
if (!found) {
@@ -1572,7 +1572,7 @@ int Manage_subdevs(char *devname, int fd,
tfd = dev_open(dv->devname, O_RDONLY);
if (tfd >= 0) {
fstat_is_blkdev(tfd, dv->devname, &rdev);
- close(tfd);
+ close_fd(&tfd);
} else {
int open_err = errno;
if (!stat_is_blkdev(dv->devname, &rdev)) {
@@ -1635,7 +1635,7 @@ int Manage_subdevs(char *devname, int fd,
* need non-exclusive access to add it, so
* do that now.
*/
- close(tfd);
+ close_fd(&tfd);
tfd = dev_open(dv->devname, O_RDONLY);
}
if (tfd < 0) {
@@ -1654,8 +1654,7 @@ int Manage_subdevs(char *devname, int fd,
rv = Manage_add(fd, tfd, dv, tst, &array,
force, verbose, devname, update,
rdev, array_size, raid_slot);
- close(tfd);
- tfd = -1;
+ close_fd(&tfd);
if (rv < 0)
goto abort;
if (rv > 0)
@@ -1672,7 +1671,7 @@ int Manage_subdevs(char *devname, int fd,
rdev, verbose, force,
devname);
if (sysfd >= 0)
- close(sysfd);
+ close_fd(&sysfd);
sysfd = -1;
if (rv < 0)
goto abort;
@@ -1684,8 +1683,7 @@ int Manage_subdevs(char *devname, int fd,
if (!is_remove_safe(&array, fd, dv->devname, verbose)) {
pr_err("Cannot remove %s from %s, array will be failed.\n",
dv->devname, devname);
- if (sysfd >= 0)
- close(sysfd);
+ close_fd(&sysfd);
goto abort;
}
case 'I': /* incremental fail */
@@ -1696,13 +1694,10 @@ int Manage_subdevs(char *devname, int fd,
busy = 1;
pr_err("set device faulty failed for %s: %s\n",
dv->devname, strerror(errno));
- if (sysfd >= 0)
- close(sysfd);
+ close_fd(&sysfd);
goto abort;
}
- if (sysfd >= 0)
- close(sysfd);
- sysfd = -1;
+ close_fd(&sysfd);
count++;
if (verbose >= 0)
pr_err("set %s faulty in %s\n",
@@ -1762,7 +1757,7 @@ int autodetect(void)
if (fd >= 0) {
if (ioctl(fd, RAID_AUTORUN, 0) == 0)
rv = 0;
- close(fd);
+ close_fd(&fd);
}
return rv;
}
@@ -1825,7 +1820,7 @@ free_super:
if (info)
free(info);
st->ss->free_super(st);
- close(fd);
+ close_fd(&fd);
return rv;
}
@@ -1843,10 +1838,8 @@ int move_spare(char *from_devname, char *to_devname, dev_t devid)
int fd2 = open(from_devname, O_RDONLY);
if (fd1 < 0 || fd2 < 0) {
- if (fd1 >= 0)
- close(fd1);
- if (fd2 >= 0)
- close(fd2);
+ close_fd(&fd1);
+ close_fd(&fd2);
return 0;
}
@@ -1865,15 +1858,15 @@ int move_spare(char *from_devname, char *to_devname, dev_t devid)
/* make sure manager is aware of changes */
ping_manager(to_devname);
ping_manager(from_devname);
- close(fd1);
- close(fd2);
+ close_fd(&fd1);
+ close_fd(&fd2);
return 1;
}
else
Manage_subdevs(from_devname, fd2, &devlist,
-1, 0, UOPT_UNDEFINED, 0);
}
- close(fd1);
- close(fd2);
+ close_fd(&fd1);
+ close_fd(&fd2);
return 0;
}
--
2.41.0
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