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Fedora 28: Fix misc bounds check compiler warnings 

Fix a bunch of (mostly) sprintf/snprintf truncation compiler
warnings that show up on Fedora 28 (GCC 8.0.1).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #7361 
Closes #7368
This commit is contained in:
Tony Hutter 2018-04-04 10:16:47 -07:00 committed by Brian Behlendorf
parent 1724eb62de
commit 21a4f5cc86
10 changed files with 77 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
cmd/zvol_id/zvol_id_main.c
View File

@ -55,11 +55,12 @@ main(int argc, char **argv)
{
int fd, error = 0;
char zvol_name[ZFS_MAX_DATASET_NAME_LEN];
char zvol_name_part[ZFS_MAX_DATASET_NAME_LEN];
char *zvol_name_part = NULL;
char *dev_name;
struct stat64 statbuf;
int dev_minor, dev_part;
int i;
int rc;
if (argc < 2) {
printf("Usage: %s /dev/zvol_device_node\n", argv[0]);
@ -88,11 +89,13 @@ main(int argc, char **argv)
return (errno);
}
if (dev_part > 0)
snprintf(zvol_name_part, ZFS_MAX_DATASET_NAME_LEN,
"%s-part%d", zvol_name, dev_part);
rc = asprintf(&zvol_name_part, "%s-part%d", zvol_name,
dev_part);
else
snprintf(zvol_name_part, ZFS_MAX_DATASET_NAME_LEN,
"%s", zvol_name);
rc = asprintf(&zvol_name_part, "%s", zvol_name);
if (rc == -1 || zvol_name_part == NULL)
goto error;
for (i = 0; i < strlen(zvol_name_part); i++) {
if (isblank(zvol_name_part[i]))
@ -100,6 +103,8 @@ main(int argc, char **argv)
}
printf("%s\n", zvol_name_part);
free(zvol_name_part);
error:
close(fd);
return (error);
}

2
lib/libspl/include/umem.h
View File

@ -146,7 +146,7 @@ umem_cache_create(
cp = umem_alloc(sizeof (umem_cache_t), UMEM_DEFAULT);
if (cp) {
strncpy(cp->cache_name, name, UMEM_CACHE_NAMELEN);
strlcpy(cp->cache_name, name, UMEM_CACHE_NAMELEN);
cp->cache_bufsize = bufsize;
cp->cache_align = align;
cp->cache_constructor = constructor;

14
lib/libzfs/libzfs_dataset.c
View File

@ -1032,10 +1032,11 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) {
zfs_userquota_prop_t uqtype;
char newpropname[128];
char *newpropname = NULL;
char domain[128];
uint64_t rid;
uint64_t valary[3];
int rc;
if (userquota_propname_decode(propname, zoned,
&uqtype, domain, sizeof (domain), &rid) != 0) {
@ -1092,17 +1093,24 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
* userquota@<hex-rid>-domain, to make it easy
* for the kernel to decode.
*/
(void) snprintf(newpropname, sizeof (newpropname),
"%s%llx-%s", zfs_userquota_prop_prefixes[uqtype],
rc = asprintf(&newpropname, "%s%llx-%s",
zfs_userquota_prop_prefixes[uqtype],
(longlong_t)rid, domain);
if (rc == -1 || newpropname == NULL) {
(void) no_memory(hdl);
goto error;
}
valary[0] = uqtype;
valary[1] = rid;
valary[2] = intval;
if (nvlist_add_uint64_array(ret, newpropname,
valary, 3) != 0) {
free(newpropname);
(void) no_memory(hdl);
goto error;
}
free(newpropname);
continue;
} else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,

2
lib/libzfs/libzfs_sendrecv.c
View File

@ -3758,7 +3758,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
* Determine the name of the origin snapshot.
*/
if (originsnap) {
(void) strncpy(origin, originsnap, sizeof (origin));
(void) strlcpy(origin, originsnap, sizeof (origin));
if (flags->verbose)
(void) printf("using provided clone origin %s\n",
origin);

3
module/zfs/dsl_scan.c
View File

@ -1176,14 +1176,15 @@ dsl_scan_check_suspend(dsl_scan_t *scn, const zbookmark_phys_t *zb)
(longlong_t)zb->zb_blkid);
scn->scn_phys.scn_bookmark = *zb;
} else {
#ifdef ZFS_DEBUG
dsl_scan_phys_t *scnp = &scn->scn_phys;
dprintf("suspending at at DDT bookmark "
"%llx/%llx/%llx/%llx\n",
(longlong_t)scnp->scn_ddt_bookmark.ddb_class,
(longlong_t)scnp->scn_ddt_bookmark.ddb_type,
(longlong_t)scnp->scn_ddt_bookmark.ddb_checksum,
(longlong_t)scnp->scn_ddt_bookmark.ddb_cursor);
#endif
}
scn->scn_suspending = B_TRUE;
return (B_TRUE);

3
tests/zfs-tests/cmd/devname2devid/devname2devid.c
View File

@ -83,7 +83,8 @@ udev_device_get_devid(struct udev_device *dev, char *bufptr, size_t buflen)
name = udev_list_entry_get_name(entry);
if (strncmp(name, devbyid, strlen(devbyid)) == 0) {
name += strlen(DEV_BYID_PATH);
(void) stpncpy(bufptr, name, buflen);
(void) stpncpy(bufptr, name, buflen - 1);
bufptr[buflen - 1] = '\0';
return (0);
}
entry = udev_list_entry_get_next(entry);

16
tests/zfs-tests/cmd/mkbusy/mkbusy.c
View File

@ -98,8 +98,9 @@ main(int argc, char *argv[])
if ((ret = stat(argv[0], &sbuf)) != 0) {
char *arg, *dname, *fname;
int arglen, dlen, flen;
int arglen;
char *slash;
int rc;
/*
* The argument supplied doesn't exist. Copy the path, and
@ -126,23 +127,18 @@ main(int argc, char *argv[])
free(arg);
if (dname == NULL || fname == NULL)
fail("strdup", 1);
dlen = strlen(dname);
flen = strlen(fname);
/* The directory portion of the path must exist */
if ((ret = stat(dname, &sbuf)) != 0 || !(sbuf.st_mode &
S_IFDIR))
usage(prog);
if ((fpath = (char *)malloc(dlen + 1 + flen + 1)) == NULL)
fail("malloc", 1);
(void) memset(fpath, '\0', dlen + 1 + flen + 1);
(void) strncpy(fpath, dname, dlen);
fpath[dlen] = '/';
(void) strncat(fpath, fname, flen);
rc = asprintf(&fpath, "%s/%s", dname, fname);
free(dname);
free(fname);
if (rc == -1 || fpath == NULL)
fail("asprintf", 1);
} else if ((sbuf.st_mode & S_IFMT) == S_IFREG ||
(sbuf.st_mode & S_IFMT) == S_IFLNK ||
(sbuf.st_mode & S_IFMT) == S_IFCHR ||

8
tests/zfs-tests/cmd/mktree/mktree.c
View File

@ -137,8 +137,12 @@ mktree(char *pdir, int level)
static char *
getfdname(char *pdir, char type, int level, int dir, int file)
{
(void) snprintf(fdname, sizeof (fdname),
"%s/%c-l%dd%df%d", pdir, type, level, dir, file);
size_t size = sizeof (fdname);
if (snprintf(fdname, size, "%s/%c-l%dd%df%d", pdir, type, level, dir,
file) >= size) {
(void) fprintf(stderr, "fdname truncated\n");
exit(EINVAL);
}
return (fdname);
}

41
tests/zfs-tests/cmd/xattrtest/xattrtest.c
View File

@ -367,8 +367,10 @@ create_files(void)
char *file = NULL;
struct timeval start, stop;
double seconds;
size_t fsize;
file = malloc(PATH_MAX);
fsize = PATH_MAX;
file = malloc(fsize);
if (file == NULL) {
rc = ENOMEM;
ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
@ -379,7 +381,11 @@ create_files(void)
(void) gettimeofday(&start, NULL);
for (i = 1; i <= files; i++) {
(void) sprintf(file, "%s/file-%d", path, i);
if (snprintf(file, fsize, "%s/file-%d", path, i) >= fsize) {
rc = EINVAL;
ERROR("Error %d: path too long\n", rc);
goto out;
}
if (nth && ((i % nth) == 0))
fprintf(stdout, "create: %s\n", file);
@ -452,6 +458,7 @@ setxattrs(void)
char *file = NULL;
struct timeval start, stop;
double seconds;
size_t fsize;
value = malloc(XATTR_SIZE_MAX);
if (value == NULL) {
@ -461,7 +468,8 @@ setxattrs(void)
goto out;
}
file = malloc(PATH_MAX);
fsize = PATH_MAX;
file = malloc(fsize);
if (file == NULL) {
rc = ENOMEM;
ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
@ -472,7 +480,11 @@ setxattrs(void)
(void) gettimeofday(&start, NULL);
for (i = 1; i <= files; i++) {
(void) sprintf(file, "%s/file-%d", path, i);
if (snprintf(file, fsize, "%s/file-%d", path, i) >= fsize) {
rc = EINVAL;
ERROR("Error %d: path too long\n", rc);
goto out;
}
if (nth && ((i % nth) == 0))
fprintf(stdout, "setxattr: %s\n", file);
@ -523,6 +535,7 @@ getxattrs(void)
char *file = NULL;
struct timeval start, stop;
double seconds;
size_t fsize;
verify_value = malloc(XATTR_SIZE_MAX);
if (verify_value == NULL) {
@ -543,7 +556,9 @@ getxattrs(void)
verify_string = value_is_random ? "<random>" : verify_value;
value_string = value_is_random ? "<random>" : value;
file = malloc(PATH_MAX);
fsize = PATH_MAX;
file = malloc(fsize);
if (file == NULL) {
rc = ENOMEM;
ERROR("Error %d: malloc(%d) bytes for file name\n", rc,
@ -554,7 +569,11 @@ getxattrs(void)
(void) gettimeofday(&start, NULL);
for (i = 1; i <= files; i++) {
(void) sprintf(file, "%s/file-%d", path, i);
if (snprintf(file, fsize, "%s/file-%d", path, i) >= fsize) {
rc = EINVAL;
ERROR("Error %d: path too long\n", rc);
goto out;
}
if (nth && ((i % nth) == 0))
fprintf(stdout, "getxattr: %s\n", file);
@ -615,8 +634,10 @@ unlink_files(void)
char *file = NULL;
struct timeval start, stop;
double seconds;
size_t fsize;
file = malloc(PATH_MAX);
fsize = PATH_MAX;
file = malloc(fsize);
if (file == NULL) {
rc = ENOMEM;
ERROR("Error %d: malloc(%d) bytes for file name\n",
@ -627,7 +648,11 @@ unlink_files(void)
(void) gettimeofday(&start, NULL);
for (i = 1; i <= files; i++) {
(void) sprintf(file, "%s/file-%d", path, i);
if (snprintf(file, fsize, "%s/file-%d", path, i) >= fsize) {
rc = EINVAL;
ERROR("Error %d: path too long\n", rc);
goto out;
}
if (nth && ((i % nth) == 0))
fprintf(stdout, "unlink: %s\n", file);

7
tests/zfs-tests/tests/functional/cli_root/zfs_diff/socket.c
View File

@ -30,13 +30,16 @@ main(int argc, char *argv[])
struct sockaddr_un sock;
int fd;
char *path;
size_t size;
if (argc != 2) {
fprintf(stderr, "usage: %s /path/to/socket\n", argv[0]);
exit(1);
}
path = argv[1];
strncpy(sock.sun_path, (char *)path, sizeof (sock.sun_path));
size = sizeof (sock.sun_path);
strncpy(sock.sun_path, (char *)path, size - 1);
sock.sun_path[size - 1] = '\0';
sock.sun_family = AF_UNIX;
if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1) {
perror("socket");