projects / thirdparty / systemd.git / blame
| Commit | Line | Data |
|---|---|---|
| c95f9a23 LP |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
| 2 | ||
| 3 | #include "id128-util.h" | |
| 4 | #include "mkfs-util.h" | |
| 5 | #include "path-util.h" | |
| 6 | #include "process-util.h" | |
| 7 | #include "string-util.h" | |
| 8 | ||
| 9 | int mkfs_exists(const char *fstype) { | |
| 10 | const char *mkfs; | |
| 11 | int r; | |
| 12 | ||
| 13 | assert(fstype); | |
| 14 | ||
| 15 | if (STR_IN_SET(fstype, "auto", "swap")) /* these aren't real file system types, refuse early */ | |
| 16 | return -EINVAL; | |
| 17 | ||
| 18 | mkfs = strjoina("mkfs.", fstype); | |
| 19 | if (!filename_is_valid(mkfs)) /* refuse file system types with slashes and similar */ | |
| 20 | return -EINVAL; | |
| 21 | ||
| 22 | r = find_binary(mkfs, NULL); | |
| 23 | if (r == -ENOENT) | |
| 24 | return false; | |
| 25 | if (r < 0) | |
| 26 | return r; | |
| 27 | ||
| 28 | return true; | |
| 29 | } | |
| 30 | ||
| 31 | int make_filesystem( | |
| 32 | const char *node, | |
| 33 | const char *fstype, | |
| 34 | const char *label, | |
| 35 | sd_id128_t uuid, | |
| 36 | bool discard) { | |
| 37 | ||
| 38 | _cleanup_free_ char *mkfs = NULL; | |
| 39 | int r; | |
| 40 | ||
| 41 | assert(node); | |
| 42 | assert(fstype); | |
| 43 | assert(label); | |
| 44 | ||
| 45 | if (streq(fstype, "swap")) { | |
| 46 | r = find_binary("mkswap", &mkfs); | |
| 47 | if (r == -ENOENT) | |
| 48 | return log_error_errno(SYNTHETIC_ERRNO(EPROTONOSUPPORT), "mkswap binary not available."); | |
| 49 | if (r < 0) | |
| 50 | return log_error_errno(r, "Failed to determine whether mkswap binary exists: %m"); | |
| 51 | } else { | |
| 52 | r = mkfs_exists(fstype); | |
| 53 | if (r < 0) | |
| 54 | return log_error_errno(r, "Failed to determine whether mkfs binary for %s exists: %m", fstype); | |
| 55 | if (r == 0) | |
| 56 | return log_error_errno(SYNTHETIC_ERRNO(EPROTONOSUPPORT), "mkfs binary for %s is not available.", fstype); | |
| 57 | ||
| 58 | mkfs = strjoin("mkfs.", fstype); | |
| 59 | if (!mkfs) | |
| 60 | return log_oom(); | |
| 61 | } | |
| 62 | ||
| 63 | r = safe_fork("(mkfs)", FORK_RESET_SIGNALS|FORK_RLIMIT_NOFILE_SAFE|FORK_DEATHSIG|FORK_LOG|FORK_WAIT|FORK_STDOUT_TO_STDERR, NULL); | |
| 64 | if (r < 0) | |
| 65 | return r; | |
| 66 | if (r == 0) { | |
| 67 | char suuid[ID128_UUID_STRING_MAX]; | |
| 68 | ||
| 69 | /* Child */ | |
| 70 | id128_to_uuid_string(uuid, suuid); | |
| 71 | ||
| 72 | if (streq(fstype, "ext4")) | |
| 73 | (void) execlp(mkfs, mkfs, | |
| 74 | "-L", label, | |
| 75 | "-U", suuid, | |
| 76 | "-I", "256", | |
| 77 | "-O", "has_journal", | |
| 78 | "-m", "0", | |
| 79 | "-E", discard ? "lazy_itable_init=1,discard" : "lazy_itable_init=1,nodiscard", | |
| 80 | node, NULL); | |
| 81 | ||
| 82 | else if (streq(fstype, "btrfs")) { | |
| 83 | if (discard) | |
| 84 | (void) execlp(mkfs, mkfs, "-L", label, "-U", suuid, node, NULL); | |
| 85 | else | |
| 86 | (void) execlp(mkfs, mkfs, "-L", label, "-U", suuid, "--nodiscard", node, NULL); | |
| 87 | ||
| 88 | } else if (streq(fstype, "xfs")) { | |
| 89 | const char *j; | |
| 90 | ||
| 91 | j = strjoina("uuid=", suuid); | |
| 92 | if (discard) | |
| 93 | (void) execlp(mkfs, mkfs, "-L", label, "-m", j, "-m", "reflink=1", node, NULL); | |
| 94 | else | |
| 95 | (void) execlp(mkfs, mkfs, "-L", label, "-m", j, "-m", "reflink=1", "-K", node, NULL); | |
| 96 | ||
| 97 | } else if (streq(fstype, "swap")) { | |
| 98 | ||
| 99 | (void) execlp(mkfs, mkfs, | |
| 100 | "-L", label, | |
| 101 | "-U", suuid, | |
| 102 | node, NULL); | |
| 103 | ||
| 104 | } else | |
| 105 | /* Generic fallback for all other file systems */ | |
| 106 | (void) execlp(mkfs, mkfs, node, NULL); | |
| 107 | ||
| 108 | log_error_errno(errno, "Failed to execute %s: %m", mkfs); | |
| 109 | ||
| 110 | _exit(EXIT_FAILURE); | |
| 111 | } | |
| 112 | ||
| 113 | return 0; | |
| 114 | } |