path: root/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
diff options
authorToomas Soome <tsoome@FreeBSD.org>2020-06-23 06:42:39 +0000
committerToomas Soome <tsoome@FreeBSD.org>2020-06-23 06:42:39 +0000
commita14844e0d67a69239e522de342c6690428edccd0 (patch)
tree6597aa42b3e2b571f966faa50d16d1c39e35c7c7 /cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
parentb40dd828bdc96959cf5fa90d02fc00d96c54fbe4 (diff)
MFOpenZFS: Add basic zfs ioc input nvpair validation
We want newer versions of libzfs_core to run against an existing zfs kernel module (i.e. a deferred reboot or module reload after an update). Programmatically document, via a zfs_ioc_key_t, the valid arguments for the ioc commands that rely on nvpair input arguments (i.e. non legacy commands from libzfs_core). Automatically verify the expected pairs before dispatching a command. This initial phase focuses on the non-legacy ioctls. A follow-on change can address the legacy ioctl input from the zfs_cmd_t. The zfs_ioc_key_t for zfs_keys_channel_program looks like: static const zfs_ioc_key_t zfs_keys_channel_program[] = { {"program", DATA_TYPE_STRING, 0}, {"arg", DATA_TYPE_UNKNOWN, 0}, {"sync", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL}, {"instrlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, {"memlimit", DATA_TYPE_UINT64, ZK_OPTIONAL}, }; Introduce four input errors to identify specific input failures (in addition to generic argument value errors like EINVAL, ERANGE, EBADF, and E2BIG). ZFS_ERR_IOC_CMD_UNAVAIL the ioctl number is not supported by kernel ZFS_ERR_IOC_ARG_UNAVAIL an input argument is not supported by kernel ZFS_ERR_IOC_ARG_REQUIRED a required input argument is missing ZFS_ERR_IOC_ARG_BADTYPE an input argument has an invalid type Reviewed by: allanjude Obtained from: OpenZFS Sponsored by: Netflix, Klara Inc. Differential Revision: https://reviews.freebsd.org/D25393
Notes: svn path=/head/; revision=362531
Diffstat (limited to 'cddl/contrib/opensolaris/cmd/zfs/zfs_main.c')
1 files changed, 12 insertions, 10 deletions
diff --git a/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c b/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
index 301042b54ca3..d453ba030488 100644
--- a/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
+++ b/cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
@@ -7235,7 +7235,7 @@ zfs_do_bookmark(int argc, char **argv)
if (ret != 0) {
- const char *err_msg;
+ const char *err_msg = NULL;
char errbuf[1024];
(void) snprintf(errbuf, sizeof (errbuf),
@@ -7259,11 +7259,13 @@ zfs_do_bookmark(int argc, char **argv)
err_msg = "out of space";
- err_msg = "unknown error";
+ (void) zfs_standard_error(g_zfs, ret, errbuf);
- (void) fprintf(stderr, "%s: %s\n", errbuf,
- dgettext(TEXT_DOMAIN, err_msg));
+ if (err_msg != NULL) {
+ (void) fprintf(stderr, "%s: %s\n", errbuf,
+ dgettext(TEXT_DOMAIN, err_msg));
+ }
return (ret != 0);
@@ -7280,7 +7282,7 @@ zfs_do_channel_program(int argc, char **argv)
char c;
char *progbuf, *filename, *poolname;
size_t progsize, progread;
- nvlist_t *outnvl;
+ nvlist_t *outnvl = NULL;
uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
@@ -7420,7 +7422,8 @@ zfs_do_channel_program(int argc, char **argv)
* falling back on strerror() for an unexpected return code.
char *errstring = NULL;
- if (nvlist_exists(outnvl, ZCP_RET_ERROR)) {
+ const char *msg = gettext("Channel program execution failed");
+ if (outnvl != NULL && nvlist_exists(outnvl, ZCP_RET_ERROR)) {
(void) nvlist_lookup_string(outnvl,
ZCP_RET_ERROR, &errstring);
if (errstring == NULL)
@@ -7449,12 +7452,11 @@ zfs_do_channel_program(int argc, char **argv)
"programs must be run as root.";
- errstring = strerror(ret);
+ (void) zfs_standard_error(g_zfs, ret, msg);
- (void) fprintf(stderr,
- gettext("Channel program execution failed:\n%s\n"),
- errstring);
+ if (errstring != NULL)
+ (void) fprintf(stderr, "%s:\n%s\n", msg, errstring);
} else {
if (json_output) {
(void) nvlist_print_json(stdout, outnvl);