/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, Joyent, Inc. All rights reserved.
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
+ * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
+ * Copyright (c) 2017 Datto Inc.
*/
/*
#include <sys/mnttab.h>
#include <sys/mntent.h>
#include <sys/types.h>
-#include <wait.h>
+#include <sys/wait.h>
#include <libzfs.h>
#include <libzfs_core.h>
#include "libzfs_impl.h"
#include "zfs_prop.h"
#include "zfeature_common.h"
+#include <zfs_fletcher.h>
int
libzfs_errno(libzfs_handle_t *hdl)
"loaded.\nTry running '/sbin/modprobe zfs' as root "
"to load them.\n"));
case ENOENT:
- return (dgettext(TEXT_DOMAIN, "The /dev/zfs device is "
- "missing and must be created.\nTry running 'udevadm "
- "trigger' as root to create it.\n"));
+ return (dgettext(TEXT_DOMAIN, "/dev/zfs and /proc/self/mounts "
+ "are required.\nTry running 'udevadm trigger' and 'mount "
+ "-t proc proc /proc' as root.\n"));
case ENOEXEC:
return (dgettext(TEXT_DOMAIN, "The ZFS modules cannot be "
"auto-loaded.\nTry running '/sbin/modprobe zfs' as "
case EZFS_POSTSPLIT_ONLINE:
return (dgettext(TEXT_DOMAIN, "disk was split from this pool "
"into a new one"));
+ case EZFS_SCRUB_PAUSED:
+ return (dgettext(TEXT_DOMAIN, "scrub is paused; "
+ "use 'zpool scrub' to resume"));
case EZFS_SCRUBBING:
return (dgettext(TEXT_DOMAIN, "currently scrubbing; "
"use 'zpool scrub -s' to cancel current scrub"));
return (dgettext(TEXT_DOMAIN, "invalid diff data"));
case EZFS_POOLREADONLY:
return (dgettext(TEXT_DOMAIN, "pool is read-only"));
+ case EZFS_ACTIVE_POOL:
+ return (dgettext(TEXT_DOMAIN, "pool is imported on a "
+ "different host"));
case EZFS_UNKNOWN:
return (dgettext(TEXT_DOMAIN, "unknown error"));
default:
case ENOSPC:
case EDQUOT:
zfs_verror(hdl, EZFS_NOSPC, fmt, ap);
- return (-1);
+ break;
case EEXIST:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"pool I/O is currently suspended"));
zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap);
break;
+ case EREMOTEIO:
+ zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap);
+ break;
default:
zfs_error_aux(hdl, strerror(error));
zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap);
case EROFS:
zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap);
break;
+ case EDOM:
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "block size out of range or does not match"));
+ zfs_verror(hdl, EZFS_BADPROP, fmt, ap);
+ break;
+ case EREMOTEIO:
+ zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap);
+ break;
default:
zfs_error_aux(hdl, strerror(error));
* Convert a number to an appropriately human-readable output.
*/
void
-zfs_nicenum(uint64_t num, char *buf, size_t buflen)
+zfs_nicenum_format(uint64_t num, char *buf, size_t buflen,
+ enum zfs_nicenum_format format)
{
uint64_t n = num;
int index = 0;
- char u;
+ const char *u;
+ const char *units[3][7] = {
+ [ZFS_NICENUM_1024] = {"", "K", "M", "G", "T", "P", "E"},
+ [ZFS_NICENUM_BYTES] = {"B", "K", "M", "G", "T", "P", "E"},
+ [ZFS_NICENUM_TIME] = {"ns", "us", "ms", "s", "?", "?", "?"}
+ };
+
+ const int units_len[] = {[ZFS_NICENUM_1024] = 6,
+ [ZFS_NICENUM_BYTES] = 6,
+ [ZFS_NICENUM_TIME] = 4};
+
+ const int k_unit[] = { [ZFS_NICENUM_1024] = 1024,
+ [ZFS_NICENUM_BYTES] = 1024,
+ [ZFS_NICENUM_TIME] = 1000};
- while (n >= 1024 && index < 6) {
- n /= 1024;
+ double val;
+
+ if (format == ZFS_NICENUM_RAW) {
+ snprintf(buf, buflen, "%llu", (u_longlong_t)num);
+ return;
+ } else if (format == ZFS_NICENUM_RAWTIME && num > 0) {
+ snprintf(buf, buflen, "%llu", (u_longlong_t)num);
+ return;
+ } else if (format == ZFS_NICENUM_RAWTIME && num == 0) {
+ snprintf(buf, buflen, "%s", "-");
+ return;
+ }
+
+ while (n >= k_unit[format] && index < units_len[format]) {
+ n /= k_unit[format];
index++;
}
- u = " KMGTPE"[index];
+ u = units[format][index];
- if (index == 0) {
- (void) snprintf(buf, buflen, "%llu", (u_longlong_t) n);
- } else if ((num & ((1ULL << 10 * index) - 1)) == 0) {
+ /* Don't print zero latencies since they're invalid */
+ if ((format == ZFS_NICENUM_TIME) && (num == 0)) {
+ (void) snprintf(buf, buflen, "-");
+ } else if ((index == 0) || ((num %
+ (uint64_t)powl(k_unit[format], index)) == 0)) {
/*
* If this is an even multiple of the base, always display
* without any decimal precision.
*/
- (void) snprintf(buf, buflen, "%llu%c", (u_longlong_t) n, u);
+ (void) snprintf(buf, buflen, "%llu%s", (u_longlong_t)n, u);
+
} else {
/*
* We want to choose a precision that reflects the best choice
*/
int i;
for (i = 2; i >= 0; i--) {
- if (snprintf(buf, buflen, "%.*f%c", i,
- (double)num / (1ULL << 10 * index), u) <= 5)
- break;
+ val = (double)num /
+ (uint64_t)powl(k_unit[format], index);
+
+ /*
+ * Don't print floating point values for time. Note,
+ * we use floor() instead of round() here, since
+ * round can result in undesirable results. For
+ * example, if "num" is in the range of
+ * 999500-999999, it will print out "1000us". This
+ * doesn't happen if we use floor().
+ */
+ if (format == ZFS_NICENUM_TIME) {
+ if (snprintf(buf, buflen, "%d%s",
+ (unsigned int) floor(val), u) <= 5)
+ break;
+
+ } else {
+ if (snprintf(buf, buflen, "%.*f%s", i,
+ val, u) <= 5)
+ break;
+ }
}
}
}
+/*
+ * Convert a number to an appropriately human-readable output.
+ */
+void
+zfs_nicenum(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_1024);
+}
+
+/*
+ * Convert a time to an appropriately human-readable output.
+ * @num: Time in nanoseconds
+ */
+void
+zfs_nicetime(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_TIME);
+}
+
+/*
+ * Print out a raw number with correct column spacing
+ */
+void
+zfs_niceraw(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_RAW);
+}
+
+/*
+ * Convert a number of bytes to an appropriately human-readable output.
+ */
+void
+zfs_nicebytes(uint64_t num, char *buf, size_t buflen)
+{
+ zfs_nicenum_format(num, buf, buflen, ZFS_NICENUM_BYTES);
+}
+
void
libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr)
{
return (access(path, F_OK) == 0);
}
-int
-libzfs_run_process(const char *path, char *argv[], int flags)
+
+/*
+ * Read lines from an open file descriptor and store them in an array of
+ * strings until EOF. lines[] will be allocated and populated with all the
+ * lines read. All newlines are replaced with NULL terminators for
+ * convenience. lines[] must be freed after use with libzfs_free_str_array().
+ *
+ * Returns the number of lines read.
+ */
+static int
+libzfs_read_stdout_from_fd(int fd, char **lines[])
+{
+
+ FILE *fp;
+ int lines_cnt = 0;
+ size_t len = 0;
+ char *line = NULL;
+ char **tmp_lines = NULL, **tmp;
+ char *nl = NULL;
+ int rc;
+
+ fp = fdopen(fd, "r");
+ if (fp == NULL)
+ return (0);
+ while (1) {
+ rc = getline(&line, &len, fp);
+ if (rc == -1)
+ break;
+
+ tmp = realloc(tmp_lines, sizeof (*tmp_lines) * (lines_cnt + 1));
+ if (tmp == NULL) {
+ /* Return the lines we were able to process */
+ break;
+ }
+ tmp_lines = tmp;
+
+ /* Terminate newlines */
+ if ((nl = strchr(line, '\n')) != NULL)
+ *nl = '\0';
+ tmp_lines[lines_cnt] = line;
+ lines_cnt++;
+ line = NULL;
+ }
+ fclose(fp);
+ *lines = tmp_lines;
+ return (lines_cnt);
+}
+
+static int
+libzfs_run_process_impl(const char *path, char *argv[], char *env[], int flags,
+ char **lines[], int *lines_cnt)
{
pid_t pid;
int error, devnull_fd;
+ int link[2];
+
+ /*
+ * Setup a pipe between our child and parent process if we're
+ * reading stdout.
+ */
+ if ((lines != NULL) && pipe(link) == -1)
+ return (-ESTRPIPE);
pid = vfork();
if (pid == 0) {
+ /* Child process */
devnull_fd = open("/dev/null", O_WRONLY);
if (devnull_fd < 0)
_exit(-1);
- if (!(flags & STDOUT_VERBOSE))
+ if (!(flags & STDOUT_VERBOSE) && (lines == NULL))
(void) dup2(devnull_fd, STDOUT_FILENO);
+ else if (lines != NULL) {
+ /* Save the output to lines[] */
+ dup2(link[1], STDOUT_FILENO);
+ close(link[0]);
+ close(link[1]);
+ }
if (!(flags & STDERR_VERBOSE))
(void) dup2(devnull_fd, STDERR_FILENO);
close(devnull_fd);
- (void) execvp(path, argv);
+ if (flags & NO_DEFAULT_PATH) {
+ if (env == NULL)
+ execv(path, argv);
+ else
+ execve(path, argv, env);
+ } else {
+ if (env == NULL)
+ execvp(path, argv);
+ else
+ execvpe(path, argv, env);
+ }
+
_exit(-1);
} else if (pid > 0) {
+ /* Parent process */
int status;
while ((error = waitpid(pid, &status, 0)) == -1 &&
- errno == EINTR);
+ errno == EINTR) { }
if (error < 0 || !WIFEXITED(status))
return (-1);
+ if (lines != NULL) {
+ close(link[1]);
+ *lines_cnt = libzfs_read_stdout_from_fd(link[0], lines);
+ }
return (WEXITSTATUS(status));
}
return (-1);
}
+int
+libzfs_run_process(const char *path, char *argv[], int flags)
+{
+ return (libzfs_run_process_impl(path, argv, NULL, flags, NULL, NULL));
+}
+
+/*
+ * Run a command and store its stdout lines in an array of strings (lines[]).
+ * lines[] is allocated and populated for you, and the number of lines is set in
+ * lines_cnt. lines[] must be freed after use with libzfs_free_str_array().
+ * All newlines (\n) in lines[] are terminated for convenience.
+ */
+int
+libzfs_run_process_get_stdout(const char *path, char *argv[], char *env[],
+ char **lines[], int *lines_cnt)
+{
+ return (libzfs_run_process_impl(path, argv, env, 0, lines, lines_cnt));
+}
+
+/*
+ * Same as libzfs_run_process_get_stdout(), but run without $PATH set. This
+ * means that *path needs to be the full path to the executable.
+ */
+int
+libzfs_run_process_get_stdout_nopath(const char *path, char *argv[],
+ char *env[], char **lines[], int *lines_cnt)
+{
+ return (libzfs_run_process_impl(path, argv, env, NO_DEFAULT_PATH,
+ lines, lines_cnt));
+}
+
+/*
+ * Free an array of strings. Free both the strings contained in the array and
+ * the array itself.
+ */
+void
+libzfs_free_str_array(char **strs, int count)
+{
+ while (--count >= 0)
+ free(strs[count]);
+
+ free(strs);
+}
+
+/*
+ * Returns 1 if environment variable is set to "YES", "yes", "ON", "on", or
+ * a non-zero number.
+ *
+ * Returns 0 otherwise.
+ */
+int
+libzfs_envvar_is_set(char *envvar)
+{
+ char *env = getenv(envvar);
+ if (env && (strtoul(env, NULL, 0) > 0 ||
+ (!strncasecmp(env, "YES", 3) && strnlen(env, 4) == 3) ||
+ (!strncasecmp(env, "ON", 2) && strnlen(env, 3) == 2)))
+ return (1);
+
+ return (0);
+}
+
/*
* Verify the required ZFS_DEV device is available and optionally attempt
* to load the ZFS modules. Under normal circumstances the modules
return (NULL);
}
- hdl->libzfs_sharetab = fopen("/etc/dfs/sharetab", "r");
+ hdl->libzfs_sharetab = fopen(ZFS_SHARETAB, "r");
if (libzfs_core_init() != 0) {
(void) close(hdl->libzfs_fd);
(void) fclose(hdl->libzfs_mnttab);
- (void) fclose(hdl->libzfs_sharetab);
+ if (hdl->libzfs_sharetab)
+ (void) fclose(hdl->libzfs_sharetab);
free(hdl);
return (NULL);
}
zpool_prop_init();
zpool_feature_init();
libzfs_mnttab_init(hdl);
+ fletcher_4_init();
return (hdl);
}
namespace_clear(hdl);
libzfs_mnttab_fini(hdl);
libzfs_core_fini();
+ fletcher_4_fini();
free(hdl);
}
* Given a name, determine whether or not it's a valid path
* (starts with '/' or "./"). If so, walk the mnttab trying
* to match the device number. If not, treat the path as an
- * fs/vol/snap name.
+ * fs/vol/snap/bkmark name.
*/
zfs_handle_t *
zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
{
int len = strlen(path);
- if (strncmp(path, UDISK_ROOT, strlen(UDISK_ROOT)) == 0) {
+ if ((strncmp(path, UDISK_ROOT, strlen(UDISK_ROOT)) == 0) ||
+ (strncmp(path, ZVOL_ROOT, strlen(ZVOL_ROOT)) == 0)) {
if (len + 6 >= max_len)
return (-1);
dup = strdup(cmp);
dir = strtok(dup, "/");
while (dir) {
- strcat(cmp_name, "/");
- strcat(cmp_name, dir);
+ strlcat(cmp_name, "/", sizeof (cmp_name));
+ strlcat(cmp_name, dir, sizeof (cmp_name));
dir = strtok(NULL, "/");
}
free(dup);
return (0);
}
+/*
+ * Given a full path to a device determine if that device appears in the
+ * import search path. If it does return the first match and store the
+ * index in the passed 'order' variable, otherwise return an error.
+ */
+int
+zfs_path_order(char *name, int *order)
+{
+ int i = 0, error = ENOENT;
+ char *dir, *env, *envdup;
+
+ env = getenv("ZPOOL_IMPORT_PATH");
+ if (env) {
+ envdup = strdup(env);
+ dir = strtok(envdup, ":");
+ while (dir) {
+ if (strncmp(name, dir, strlen(dir)) == 0) {
+ *order = i;
+ error = 0;
+ break;
+ }
+ dir = strtok(NULL, ":");
+ i++;
+ }
+ free(envdup);
+ } else {
+ for (i = 0; i < DEFAULT_IMPORT_PATH_SIZE; i++) {
+ if (strncmp(name, zpool_default_import_path[i],
+ strlen(zpool_default_import_path[i])) == 0) {
+ *order = i;
+ error = 0;
+ break;
+ }
+ }
+ }
+
+ return (error);
+}
+
/*
* Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from
* an ioctl().
if (len == 0)
len = 16 * 1024;
zc->zc_nvlist_dst_size = len;
- if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
- zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
+ zc->zc_nvlist_dst =
+ (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
+ if (zc->zc_nvlist_dst == 0)
return (-1);
return (0);
zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc)
{
free((void *)(uintptr_t)zc->zc_nvlist_dst);
- if ((zc->zc_nvlist_dst = (uint64_t)(uintptr_t)
- zfs_alloc(hdl, zc->zc_nvlist_dst_size)) == 0)
+ zc->zc_nvlist_dst =
+ (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size);
+ if (zc->zc_nvlist_dst == 0)
return (-1);
return (0);
free((void *)(uintptr_t)zc->zc_nvlist_conf);
free((void *)(uintptr_t)zc->zc_nvlist_src);
free((void *)(uintptr_t)zc->zc_nvlist_dst);
+ zc->zc_nvlist_conf = 0;
+ zc->zc_nvlist_src = 0;
+ zc->zc_nvlist_dst = 0;
}
static int
case ZPROP_SRC_RECEIVED:
str = "received";
break;
+
+ default:
+ str = NULL;
+ assert(!"unhandled zprop_source_t");
}
break;
const char *propname;
char *value;
boolean_t isnone = B_FALSE;
+ int err = 0;
if (type == ZFS_TYPE_POOL) {
proptype = zpool_prop_get_type(prop);
"'%s' must be a string"), nvpair_name(elem));
goto error;
}
- (void) nvpair_value_string(elem, svalp);
+ err = nvpair_value_string(elem, svalp);
+ if (err != 0) {
+ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
+ "'%s' is invalid"), nvpair_name(elem));
+ goto error;
+ }
if (strlen(*svalp) >= ZFS_MAXPROPLEN) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"'%s' is too long"), nvpair_name(elem));
projects / mirror_zfs-debian.git / blobdiff