From 1b4b73fd535a6487075e98f620454ff2e13b5240 Mon Sep 17 00:00:00 2001 From: Nigel Croxon Date: Wed, 10 Jul 2024 08:55:08 -0400 Subject: [PATCH 120/201] 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 --- 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<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