diff options
Diffstat (limited to 'lib/libzfs/os/freebsd/libzfs_compat.c')
-rw-r--r-- | lib/libzfs/os/freebsd/libzfs_compat.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/lib/libzfs/os/freebsd/libzfs_compat.c b/lib/libzfs/os/freebsd/libzfs_compat.c new file mode 100644 index 000000000000..037ba56efe1c --- /dev/null +++ b/lib/libzfs/os/freebsd/libzfs_compat.c @@ -0,0 +1,321 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. + */ +#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h> +#include <libzfs_impl.h> +#include <libzfs.h> +#include <libzutil.h> +#include <sys/sysctl.h> +#include <libintl.h> +#include <sys/linker.h> +#include <sys/module.h> +#include <sys/stat.h> +#include <sys/param.h> + +#ifdef IN_BASE +#define ZFS_KMOD "zfs" +#else +#define ZFS_KMOD "openzfs" +#endif + +void +libzfs_set_pipe_max(int infd) +{ + /* FreeBSD automatically resizes */ +} + +static int +execvPe(const char *name, const char *path, char * const *argv, + char * const *envp) +{ + const char **memp; + size_t cnt, lp, ln; + int eacces, save_errno; + char *cur, buf[MAXPATHLEN]; + const char *p, *bp; + struct stat sb; + + eacces = 0; + + /* If it's an absolute or relative path name, it's easy. */ + if (strchr(name, '/')) { + bp = name; + cur = NULL; + goto retry; + } + bp = buf; + + /* If it's an empty path name, fail in the usual POSIX way. */ + if (*name == '\0') { + errno = ENOENT; + return (-1); + } + + cur = alloca(strlen(path) + 1); + if (cur == NULL) { + errno = ENOMEM; + return (-1); + } + strcpy(cur, path); + while ((p = strsep(&cur, ":")) != NULL) { + /* + * It's a SHELL path -- double, leading and trailing colons + * mean the current directory. + */ + if (*p == '\0') { + p = "."; + lp = 1; + } else + lp = strlen(p); + ln = strlen(name); + + /* + * If the path is too long complain. This is a possible + * security issue; given a way to make the path too long + * the user may execute the wrong program. + */ + if (lp + ln + 2 > sizeof (buf)) { + (void) write(STDERR_FILENO, "execvP: ", 8); + (void) write(STDERR_FILENO, p, lp); + (void) write(STDERR_FILENO, ": path too long\n", + 16); + continue; + } + bcopy(p, buf, lp); + buf[lp] = '/'; + bcopy(name, buf + lp + 1, ln); + buf[lp + ln + 1] = '\0'; + +retry: (void) execve(bp, argv, envp); + switch (errno) { + case E2BIG: + goto done; + case ELOOP: + case ENAMETOOLONG: + case ENOENT: + break; + case ENOEXEC: + for (cnt = 0; argv[cnt]; ++cnt) + ; + memp = alloca((cnt + 2) * sizeof (char *)); + if (memp == NULL) { + /* errno = ENOMEM; XXX override ENOEXEC? */ + goto done; + } + memp[0] = "sh"; + memp[1] = bp; + bcopy(argv + 1, memp + 2, cnt * sizeof (char *)); + execve(_PATH_BSHELL, __DECONST(char **, memp), envp); + goto done; + case ENOMEM: + goto done; + case ENOTDIR: + break; + case ETXTBSY: + /* + * We used to retry here, but sh(1) doesn't. + */ + goto done; + default: + /* + * EACCES may be for an inaccessible directory or + * a non-executable file. Call stat() to decide + * which. This also handles ambiguities for EFAULT + * and EIO, and undocumented errors like ESTALE. + * We hope that the race for a stat() is unimportant. + */ + save_errno = errno; + if (stat(bp, &sb) != 0) + break; + if (save_errno == EACCES) { + eacces = 1; + continue; + } + errno = save_errno; + goto done; + } + } + if (eacces) + errno = EACCES; + else + errno = ENOENT; +done: + return (-1); +} + +int +execvpe(const char *name, char * const argv[], char * const envp[]) +{ + const char *path; + + /* Get the path we're searching. */ + if ((path = getenv("PATH")) == NULL) + path = _PATH_DEFPATH; + + return (execvPe(name, path, argv, envp)); +} + +const char * +libzfs_error_init(int error) +{ + + return (strerror(error)); +} + +int +zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc) +{ + return (zfs_ioctl_fd(hdl->libzfs_fd, request, zc)); +} + +/* + * Verify the required ZFS_DEV device is available and optionally attempt + * to load the ZFS modules. Under normal circumstances the modules + * should already have been loaded by some external mechanism. + * + * Environment variables: + * - ZFS_MODULE_LOADING="YES|yes|ON|on" - Attempt to load modules. + * - ZFS_MODULE_TIMEOUT="<seconds>" - Seconds to wait for ZFS_DEV + */ +int +libzfs_load_module(void) +{ + /* + * XXX: kldfind(ZFS_KMOD) would be nice here, but we retain + * modfind("zfs") so out-of-base openzfs userland works with the + * in-base module. + */ + if (modfind("zfs") < 0) { + /* Not present in kernel, try loading it. */ + if (kldload(ZFS_KMOD) < 0 && errno != EEXIST) { + return (errno); + } + } + return (0); +} + +int +zpool_relabel_disk(libzfs_handle_t *hdl, const char *path, const char *msg) +{ + return (0); +} + +int +zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name) +{ + return (0); +} + +int +find_shares_object(differ_info_t *di) +{ + return (0); +} + +/* + * Attach/detach the given filesystem to/from the given jail. + */ +int +zfs_jail(zfs_handle_t *zhp, int jailid, int attach) +{ + libzfs_handle_t *hdl = zhp->zfs_hdl; + zfs_cmd_t zc = {"\0"}; + char errbuf[1024]; + unsigned long cmd; + int ret; + + if (attach) { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name); + } else { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name); + } + + switch (zhp->zfs_type) { + case ZFS_TYPE_VOLUME: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "volumes can not be jailed")); + return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); + case ZFS_TYPE_SNAPSHOT: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "snapshots can not be jailed")); + return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); + case ZFS_TYPE_BOOKMARK: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "bookmarks can not be jailed")); + return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); + case ZFS_TYPE_POOL: + case ZFS_TYPE_FILESYSTEM: + /* OK */ + ; + } + assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM); + + (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); + zc.zc_objset_type = DMU_OST_ZFS; + zc.zc_zoneid = jailid; + + cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL; + if ((ret = zfs_ioctl(hdl, cmd, &zc)) != 0) + zfs_standard_error(hdl, errno, errbuf); + + return (ret); +} + +/* + * Set loader options for next boot. + */ +int +zpool_nextboot(libzfs_handle_t *hdl, uint64_t pool_guid, uint64_t dev_guid, + const char *command) +{ + zfs_cmd_t zc = {"\0"}; + nvlist_t *args; + int error; + + args = fnvlist_alloc(); + fnvlist_add_uint64(args, ZPOOL_CONFIG_POOL_GUID, pool_guid); + fnvlist_add_uint64(args, ZPOOL_CONFIG_GUID, dev_guid); + fnvlist_add_string(args, "command", command); + error = zcmd_write_src_nvlist(hdl, &zc, args); + if (error == 0) + error = zfs_ioctl(hdl, ZFS_IOC_NEXTBOOT, &zc); + zcmd_free_nvlists(&zc); + nvlist_free(args); + return (error); +} + +/* + * Fill given version buffer with zfs kernel version. + * Returns 0 on success, and -1 on error (with errno set) + */ +int +zfs_version_kernel(char *version, int len) +{ + size_t l = len; + + return (sysctlbyname("vfs.zfs.version.module", + version, &l, NULL, 0)); +} |