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libzfs: Make zfs_cmd_t initialization consistent, use zfs_ioctl

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The clang version 8.0.1 shipped in FreeBSD 12.1-RELEASE also oddly
throws a warning that is treated as an error on the initialization of
the zc struct in zpool_nextboot.

The zpool_nextboot code from FreeBSD was not updated to use zfs_ioctl.

Switch ioctl to zfs_ioctl in and use {"\0"} to initialize the struct.
Do a consistency pass for zfs_cmd_t initialization.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10539
This commit is contained in:
Ryan Moeller 2020-07-09 20:47:12 -04:00 committed by GitHub
parent fb91f0367e
commit 659f4008be
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 8 additions and 6 deletions
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3
lib/libzfs/libzfs_sendrecv.c
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@ -860,7 +860,8 @@ int
zfs_send_progress(zfs_handle_t *zhp, int fd, uint64_t *bytes_written, zfs_send_progress(zfs_handle_t *zhp, int fd, uint64_t *bytes_written,
uint64_t *blocks_visited) uint64_t *blocks_visited)
{ {
zfs_cmd_t zc = { {0} }; zfs_cmd_t zc = {"\0"};
(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
zc.zc_cookie = fd; zc.zc_cookie = fd;
if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0) if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND_PROGRESS, &zc) != 0)

6
lib/libzfs/os/freebsd/libzfs_compat.c
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@ -230,7 +230,7 @@ int
zfs_jail(zfs_handle_t *zhp, int jailid, int attach) zfs_jail(zfs_handle_t *zhp, int jailid, int attach)
{ {
libzfs_handle_t *hdl = zhp->zfs_hdl; libzfs_handle_t *hdl = zhp->zfs_hdl;
zfs_cmd_t zc = { { 0 } }; zfs_cmd_t zc = {"\0"};
char errbuf[1024]; char errbuf[1024];
unsigned long cmd; unsigned long cmd;
int ret; int ret;
@ -281,7 +281,7 @@ int
zpool_nextboot(libzfs_handle_t *hdl, uint64_t pool_guid, uint64_t dev_guid, zpool_nextboot(libzfs_handle_t *hdl, uint64_t pool_guid, uint64_t dev_guid,
const char *command) const char *command)
{ {
zfs_cmd_t zc = { 0 }; zfs_cmd_t zc = {"\0"};
nvlist_t *args; nvlist_t *args;
int error; int error;
@ -291,7 +291,7 @@ zpool_nextboot(libzfs_handle_t *hdl, uint64_t pool_guid, uint64_t dev_guid,
fnvlist_add_string(args, "command", command); fnvlist_add_string(args, "command", command);
error = zcmd_write_src_nvlist(hdl, &zc, args); error = zcmd_write_src_nvlist(hdl, &zc, args);
if (error == 0) if (error == 0)
error = ioctl(hdl->libzfs_fd, ZFS_IOC_NEXTBOOT, &zc); error = zfs_ioctl(hdl, ZFS_IOC_NEXTBOOT, &zc);
zcmd_free_nvlists(&zc); zcmd_free_nvlists(&zc);
nvlist_free(args); nvlist_free(args);
return (error); return (error);

5
lib/libzfs_core/libzfs_core.c
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@ -293,7 +293,7 @@ lzc_promote(const char *fsname, char *snapnamebuf, int snapnamelen)
* The promote ioctl is still legacy, so we need to construct our * The promote ioctl is still legacy, so we need to construct our
* own zfs_cmd_t rather than using lzc_ioctl(). * own zfs_cmd_t rather than using lzc_ioctl().
*/ */
zfs_cmd_t zc = { "\0" }; zfs_cmd_t zc = {"\0"};
ASSERT3S(g_refcount, >, 0); ASSERT3S(g_refcount, >, 0);
VERIFY3S(g_fd, !=, -1); VERIFY3S(g_fd, !=, -1);
@ -311,8 +311,9 @@ lzc_promote(const char *fsname, char *snapnamebuf, int snapnamelen)
int int
lzc_rename(const char *source, const char *target) lzc_rename(const char *source, const char *target)
{ {
zfs_cmd_t zc = { "\0" }; zfs_cmd_t zc = {"\0"};
int error; int error;
ASSERT3S(g_refcount, >, 0); ASSERT3S(g_refcount, >, 0);
VERIFY3S(g_fd, !=, -1); VERIFY3S(g_fd, !=, -1);
(void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name));