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Commit | Line | Data |
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9440d84d | 1 | /* |
da23017d NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
9440d84d | 4 | * |
da23017d NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
9440d84d NS |
7 | * published by the Free Software Foundation. |
8 | * | |
da23017d NS |
9 | * This program is distributed in the hope that it would 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. | |
9440d84d | 13 | * |
da23017d NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
9440d84d NS |
17 | */ |
18 | ||
19 | #define ustat __kernel_ustat | |
1d7e80ee | 20 | #include <xfs/libxfs.h> |
9440d84d NS |
21 | #include <mntent.h> |
22 | #include <sys/stat.h> | |
cb5b3ef4 | 23 | #include <aio.h> |
9440d84d NS |
24 | #undef ustat |
25 | #include <sys/ustat.h> | |
26 | #include <sys/mount.h> | |
27 | #include <sys/ioctl.h> | |
28 | ||
29 | extern char *progname; | |
b74a1f6a | 30 | static int max_block_alignment; |
9440d84d NS |
31 | |
32 | #ifndef BLKGETSIZE64 | |
7f090a57 | 33 | # define BLKGETSIZE64 _IOR(0x12,114,size_t) |
9440d84d NS |
34 | #endif |
35 | #ifndef BLKBSZSET | |
7f090a57 | 36 | # define BLKBSZSET _IOW(0x12,113,size_t) |
9440d84d | 37 | #endif |
74668075 NS |
38 | #ifndef BLKSSZGET |
39 | # define BLKSSZGET _IO(0x12,104) | |
40 | #endif | |
9440d84d | 41 | |
ac419944 NS |
42 | #ifndef RAMDISK_MAJOR |
43 | #define RAMDISK_MAJOR 1 /* ramdisk major number */ | |
44 | #endif | |
45 | ||
9440d84d NS |
46 | #define PROC_MOUNTED "/proc/mounts" |
47 | ||
48 | int | |
93d9f139 | 49 | platform_check_ismounted(char *name, char *block, struct stat64 *s, int verbose) |
9440d84d NS |
50 | { |
51 | struct ustat ust; | |
52 | struct stat64 st; | |
53 | ||
54 | if (!s) { | |
55 | if (stat64(block, &st) < 0) | |
56 | return 0; | |
57 | if ((st.st_mode & S_IFMT) != S_IFBLK) | |
58 | return 0; | |
59 | s = &st; | |
60 | } | |
61 | ||
62 | if (ustat(s->st_rdev, &ust) >= 0) { | |
63 | if (verbose) | |
64 | fprintf(stderr, | |
65 | _("%s: %s contains a mounted filesystem\n"), | |
66 | progname, name); | |
67 | return 1; | |
68 | } | |
69 | return 0; | |
70 | } | |
71 | ||
72 | int | |
93d9f139 | 73 | platform_check_iswritable(char *name, char *block, struct stat64 *s, int fatal) |
9440d84d NS |
74 | { |
75 | int sts = 0; | |
76 | FILE *f; | |
77 | struct stat64 mst; | |
78 | struct mntent *mnt; | |
79 | char mounts[MAXPATHLEN]; | |
80 | ||
fc7180ce | 81 | strcpy(mounts, (!access(PROC_MOUNTED, R_OK)) ? PROC_MOUNTED : MOUNTED); |
9440d84d NS |
82 | if ((f = setmntent(mounts, "r")) == NULL) { |
83 | fprintf(stderr, _("%s: %s contains a possibly writable, " | |
84 | "mounted filesystem\n"), progname, name); | |
85 | return fatal; | |
86 | } | |
87 | while ((mnt = getmntent(f)) != NULL) { | |
88 | if (stat64(mnt->mnt_fsname, &mst) < 0) | |
89 | continue; | |
90 | if ((mst.st_mode & S_IFMT) != S_IFBLK) | |
91 | continue; | |
92 | if (mst.st_rdev == s->st_rdev | |
93 | && hasmntopt(mnt, MNTOPT_RO) != NULL) | |
94 | break; | |
95 | } | |
507f4e33 | 96 | if (mnt == NULL) { |
9440d84d NS |
97 | fprintf(stderr, _("%s: %s contains a mounted and writable " |
98 | "filesystem\n"), progname, name); | |
99 | sts = fatal; | |
100 | } | |
101 | endmntent(f); | |
102 | return sts; | |
103 | } | |
104 | ||
105 | void | |
76956054 | 106 | platform_set_blocksize(int fd, char *path, dev_t device, int blocksize) |
9440d84d | 107 | { |
76956054 NS |
108 | if (major(device) != RAMDISK_MAJOR) { |
109 | if (ioctl(fd, BLKBSZSET, &blocksize) < 0) { | |
110 | fprintf(stderr, _("%s: warning - cannot set blocksize " | |
111 | "on block device %s: %s\n"), | |
112 | progname, path, strerror(errno)); | |
113 | } | |
9440d84d NS |
114 | } |
115 | } | |
116 | ||
117 | void | |
ac419944 | 118 | platform_flush_device(int fd, dev_t device) |
9440d84d | 119 | { |
ac419944 NS |
120 | if (major(device) != RAMDISK_MAJOR) |
121 | ioctl(fd, BLKFLSBUF, 0); | |
9440d84d NS |
122 | } |
123 | ||
f02037ce NS |
124 | void |
125 | platform_findsizes(char *path, int fd, long long *sz, int *bsz) | |
9440d84d | 126 | { |
9440d84d | 127 | struct stat64 st; |
f02037ce NS |
128 | __uint64_t size; |
129 | int error; | |
9440d84d | 130 | |
f02037ce | 131 | if (fstat64(fd, &st) < 0) { |
9440d84d NS |
132 | fprintf(stderr, _("%s: " |
133 | "cannot stat the device file \"%s\": %s\n"), | |
134 | progname, path, strerror(errno)); | |
135 | exit(1); | |
136 | } | |
f02037ce NS |
137 | if ((st.st_mode & S_IFMT) == S_IFREG) { |
138 | *sz = (long long)(st.st_size >> 9); | |
139 | *bsz = BBSIZE; | |
b74a1f6a NS |
140 | if (BBSIZE > max_block_alignment) |
141 | max_block_alignment = BBSIZE; | |
f02037ce | 142 | return; |
9440d84d NS |
143 | } |
144 | ||
145 | error = ioctl(fd, BLKGETSIZE64, &size); | |
146 | if (error >= 0) { | |
147 | /* BLKGETSIZE64 returns size in bytes not 512-byte blocks */ | |
f02037ce | 148 | *sz = (long long)(size >> 9); |
9440d84d NS |
149 | } else { |
150 | /* If BLKGETSIZE64 fails, try BLKGETSIZE */ | |
151 | unsigned long tmpsize; | |
f02037ce | 152 | |
9440d84d NS |
153 | error = ioctl(fd, BLKGETSIZE, &tmpsize); |
154 | if (error < 0) { | |
155 | fprintf(stderr, _("%s: can't determine device size\n"), | |
156 | progname); | |
157 | exit(1); | |
158 | } | |
f02037ce | 159 | *sz = (long long)tmpsize; |
9440d84d NS |
160 | } |
161 | ||
f02037ce NS |
162 | if (ioctl(fd, BLKSSZGET, bsz) < 0) { |
163 | fprintf(stderr, _("%s: warning - cannot get sector size " | |
164 | "from block device %s: %s\n"), | |
165 | progname, path, strerror(errno)); | |
166 | *bsz = BBSIZE; | |
167 | } | |
b74a1f6a NS |
168 | if (*bsz > max_block_alignment) |
169 | max_block_alignment = *bsz; | |
9440d84d | 170 | } |
cb5b3ef4 MV |
171 | |
172 | int | |
173 | platform_aio_init(int aio_count) | |
174 | { | |
175 | struct aioinit lcl_aio_init; | |
176 | ||
177 | memset(&lcl_aio_init, 0, sizeof(lcl_aio_init)); | |
178 | lcl_aio_init.aio_threads = aio_count; | |
179 | lcl_aio_init.aio_numusers = aio_count; | |
180 | ||
181 | aio_init(&lcl_aio_init); | |
182 | return (1); /* aio/lio_listio available */ | |
183 | } | |
184 | ||
185 | char * | |
186 | platform_findrawpath(char *path) | |
187 | { | |
b74a1f6a NS |
188 | return path; |
189 | } | |
190 | ||
191 | char * | |
192 | platform_findblockpath(char *path) | |
193 | { | |
194 | return path; | |
195 | } | |
196 | ||
197 | int | |
198 | platform_direct_blockdev(void) | |
199 | { | |
200 | return 1; | |
201 | } | |
202 | ||
203 | int | |
204 | platform_align_blockdev(void) | |
205 | { | |
206 | if (!max_block_alignment) | |
76956054 | 207 | return getpagesize(); |
b74a1f6a | 208 | return max_block_alignment; |
cb5b3ef4 | 209 | } |
3b6ac903 MV |
210 | |
211 | int | |
212 | platform_nproc(void) | |
213 | { | |
214 | return sysconf(_SC_NPROCESSORS_ONLN); | |
215 | } |