Cyril Hrubis | d1f9382 | 2017-08-31 17:41:15 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz> |
| 3 | * |
| 4 | * This program is free software: you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation, either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <errno.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <sys/mount.h> |
| 22 | #include <sys/wait.h> |
| 23 | |
| 24 | #define TST_NO_DEFAULT_MAIN |
| 25 | #include "tst_test.h" |
| 26 | #include "tst_fs.h" |
| 27 | |
| 28 | static const char *const fs_type_whitelist[] = { |
| 29 | "ext2", |
| 30 | "ext3", |
| 31 | "ext4", |
| 32 | "xfs", |
| 33 | "btrfs", |
| 34 | "vfat", |
| 35 | "exfat", |
| 36 | "ntfs", |
| 37 | NULL |
| 38 | }; |
| 39 | |
| 40 | static const char *fs_types[ARRAY_SIZE(fs_type_whitelist)]; |
| 41 | |
| 42 | static int has_mkfs(const char *fs_type) |
| 43 | { |
| 44 | char buf[128]; |
| 45 | int ret; |
| 46 | |
| 47 | sprintf(buf, "mkfs.%s >/dev/null 2>&1", fs_type); |
| 48 | |
| 49 | ret = tst_system(buf); |
| 50 | |
| 51 | if (WEXITSTATUS(ret) == 127) { |
| 52 | tst_res(TINFO, "mkfs.%s does not exist", fs_type); |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | tst_res(TINFO, "mkfs.%s does exist", fs_type); |
| 57 | return 1; |
| 58 | } |
| 59 | |
| 60 | static int has_kernel_support(const char *fs_type) |
| 61 | { |
| 62 | static int fuse_supported = -1; |
| 63 | const char *tmpdir = getenv("TMPDIR"); |
| 64 | char buf[128]; |
| 65 | int ret; |
| 66 | |
| 67 | if (!tmpdir) |
| 68 | tmpdir = "/tmp"; |
| 69 | |
| 70 | mount("/dev/zero", tmpdir, fs_type, 0, NULL); |
| 71 | if (errno != ENODEV) { |
| 72 | tst_res(TINFO, "Kernel supports %s", fs_type); |
| 73 | return 1; |
| 74 | } |
| 75 | |
| 76 | /* Is FUSE supported by kernel? */ |
| 77 | if (fuse_supported == -1) { |
| 78 | ret = open("/dev/fuse", O_RDWR); |
| 79 | if (ret < 0) { |
| 80 | fuse_supported = 0; |
| 81 | } else { |
| 82 | fuse_supported = 1; |
| 83 | SAFE_CLOSE(ret); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | if (!fuse_supported) |
| 88 | return 0; |
| 89 | |
| 90 | /* Is FUSE implementation installed? */ |
| 91 | sprintf(buf, "mount.%s >/dev/null 2>&1", fs_type); |
| 92 | |
| 93 | ret = tst_system(buf); |
| 94 | if (WEXITSTATUS(ret) == 127) { |
| 95 | tst_res(TINFO, "Filesystem %s is not supported", fs_type); |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | tst_res(TINFO, "FUSE does support %s", fs_type); |
| 100 | return 1; |
| 101 | } |
| 102 | |
| 103 | static int is_supported(const char *fs_type) |
| 104 | { |
| 105 | return has_kernel_support(fs_type) && has_mkfs(fs_type); |
| 106 | } |
| 107 | |
| 108 | const char **tst_get_supported_fs_types(void) |
| 109 | { |
| 110 | unsigned int i, j = 0; |
| 111 | |
| 112 | for (i = 0; fs_type_whitelist[i]; i++) { |
| 113 | if (is_supported(fs_type_whitelist[i])) |
| 114 | fs_types[j++] = fs_type_whitelist[i]; |
| 115 | } |
| 116 | |
| 117 | return fs_types; |
| 118 | } |