Mercurial > gnulib
annotate lib/mountlist.c @ 1443:13bcee72981f
(read_filesystem_list): If all_fs is negative, omit non-local filesytems.
From Paul Eggert.
| author | Jim Meyering <jim@meyering.net> |
|---|---|
| date | Sat, 25 Jul 1998 14:41:04 +0000 |
| parents | 5919c19d9a1a |
| children | 8a70cc03ce0d |
| rev | line source |
|---|---|
| 5 | 1 /* mountlist.c -- return a list of mounted filesystems |
|
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2 Copyright (C) 1991, 1992, 1997, 1998 Free Software Foundation, Inc. |
| 5 | 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, or (at your option) | |
| 7 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 | |
|
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15 along with this program; if not, write to the Free Software Foundation, |
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16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 5 | 17 |
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18 #if HAVE_CONFIG_H |
| 917 | 19 # include <config.h> |
| 326 | 20 #endif |
| 21 | |
| 5 | 22 #include <stdio.h> |
| 23 #include <sys/types.h> | |
| 24 #include "mountlist.h" | |
| 25 | |
| 26 #ifdef STDC_HEADERS | |
| 917 | 27 # include <stdlib.h> |
| 5 | 28 #else |
| 29 void free (); | |
| 30 #endif | |
| 326 | 31 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H) |
| 917 | 32 # include <string.h> |
| 5 | 33 #else |
| 917 | 34 # include <strings.h> |
| 5 | 35 #endif |
| 36 | |
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37 #ifndef strstr |
| 5 | 38 char *strstr (); |
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39 #endif |
| 5 | 40 char *xmalloc (); |
| 41 char *xrealloc (); | |
| 42 char *xstrdup (); | |
| 43 void error (); | |
| 44 | |
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45 #include <errno.h> |
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46 #ifndef errno |
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47 extern int errno; |
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48 #endif |
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49 |
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50 #ifdef HAVE_FCNTL_H |
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51 # include <fcntl.h> |
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52 #endif |
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53 |
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54 #ifdef HAVE_UNISTD_H |
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55 # include <unistd.h> |
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56 #endif |
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57 |
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58 #if HAVE_SYS_PARAM_H |
| 917 | 59 # include <sys/param.h> |
| 326 | 60 #endif |
| 61 | |
| 62 #if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */ | |
| 917 | 63 # include <sys/mount.h> |
| 64 # include <sys/fs_types.h> | |
| 326 | 65 #endif /* MOUNTED_GETFSSTAT */ |
| 66 | |
| 5 | 67 #ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ |
| 917 | 68 # include <mntent.h> |
| 69 # if !defined(MOUNTED) | |
| 5 | 70 # if defined(MNT_MNTTAB) /* HP-UX. */ |
| 917 | 71 # define MOUNTED MNT_MNTTAB |
| 5 | 72 # endif |
| 73 # if defined(MNTTABNAME) /* Dynix. */ | |
| 917 | 74 # define MOUNTED MNTTABNAME |
| 5 | 75 # endif |
| 917 | 76 # endif |
| 5 | 77 #endif |
| 78 | |
| 79 #ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ | |
| 917 | 80 # include <sys/mount.h> |
| 5 | 81 #endif |
| 82 | |
| 83 #ifdef MOUNTED_GETMNT /* Ultrix. */ | |
| 917 | 84 # include <sys/mount.h> |
| 85 # include <sys/fs_types.h> | |
| 5 | 86 #endif |
| 87 | |
| 88 #ifdef MOUNTED_FREAD /* SVR2. */ | |
| 917 | 89 # include <mnttab.h> |
| 5 | 90 #endif |
| 91 | |
| 92 #ifdef MOUNTED_FREAD_FSTYP /* SVR3. */ | |
| 917 | 93 # include <mnttab.h> |
| 94 # include <sys/fstyp.h> | |
| 95 # include <sys/statfs.h> | |
| 5 | 96 #endif |
| 97 | |
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98 #ifdef MOUNTED_LISTMNTENT |
| 917 | 99 # include <mntent.h> |
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100 #endif |
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101 |
| 5 | 102 #ifdef MOUNTED_GETMNTENT2 /* SVR4. */ |
| 917 | 103 # include <sys/mnttab.h> |
| 5 | 104 #endif |
| 105 | |
| 106 #ifdef MOUNTED_VMOUNT /* AIX. */ | |
| 917 | 107 # include <fshelp.h> |
| 108 # include <sys/vfs.h> | |
| 5 | 109 #endif |
| 110 | |
| 326 | 111 #ifdef DOLPHIN |
| 112 /* So special that it's not worth putting this in autoconf. */ | |
| 917 | 113 # undef MOUNTED_FREAD_FSTYP |
| 114 # define MOUNTED_GETMNTTBL | |
| 326 | 115 #endif |
| 116 | |
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117 #if HAVE_SYS_MNTENT_H |
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118 /* This is to get MNTOPT_IGNORE on e.g. SVR4. */ |
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119 # include <sys/mntent.h> |
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120 #endif |
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121 |
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122 #if defined (MNTOPT_IGNORE) && defined (HAVE_HASMNTOPT) |
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123 # define MNT_IGNORE(M) hasmntopt ((M), MNTOPT_IGNORE) |
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124 #else |
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125 # define MNT_IGNORE(M) 0 |
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126 #endif |
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127 |
| 5 | 128 #ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ |
| 129 /* Return the value of the hexadecimal number represented by CP. | |
| 130 No prefix (like '0x') or suffix (like 'h') is expected to be | |
| 131 part of CP. */ | |
| 132 | |
| 133 static int | |
| 134 xatoi (cp) | |
| 135 char *cp; | |
| 136 { | |
| 137 int val; | |
| 326 | 138 |
| 5 | 139 val = 0; |
| 140 while (*cp) | |
| 141 { | |
| 142 if (*cp >= 'a' && *cp <= 'f') | |
| 143 val = val * 16 + *cp - 'a' + 10; | |
| 144 else if (*cp >= 'A' && *cp <= 'F') | |
| 145 val = val * 16 + *cp - 'A' + 10; | |
| 146 else if (*cp >= '0' && *cp <= '9') | |
| 147 val = val * 16 + *cp - '0'; | |
| 148 else | |
| 149 break; | |
| 150 cp++; | |
| 151 } | |
| 152 return val; | |
| 153 } | |
| 154 #endif /* MOUNTED_GETMNTENT1. */ | |
| 155 | |
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156 #if MOUNTED_GETMNTINFO |
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157 |
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158 # if ! HAVE_F_FSTYPENAME_IN_STATFS |
| 5 | 159 static char * |
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160 fstype_to_string (short t) |
| 5 | 161 { |
| 162 switch (t) | |
| 163 { | |
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164 # ifdef MOUNT_PC |
| 5 | 165 case MOUNT_PC: |
| 166 return "pc"; | |
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167 # endif |
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168 # ifdef MOUNT_MFS |
| 5 | 169 case MOUNT_MFS: |
| 170 return "mfs"; | |
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171 # endif |
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172 # ifdef MOUNT_LO |
| 5 | 173 case MOUNT_LO: |
| 174 return "lo"; | |
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175 # endif |
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176 # ifdef MOUNT_TFS |
| 5 | 177 case MOUNT_TFS: |
| 178 return "tfs"; | |
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179 # endif |
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180 # ifdef MOUNT_TMP |
| 5 | 181 case MOUNT_TMP: |
| 182 return "tmp"; | |
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183 # endif |
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184 # ifdef MOUNT_UFS |
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185 case MOUNT_UFS: |
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186 return "ufs" ; |
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187 # endif |
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188 # ifdef MOUNT_NFS |
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189 case MOUNT_NFS: |
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190 return "nfs" ; |
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191 # endif |
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192 # ifdef MOUNT_MSDOS |
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193 case MOUNT_MSDOS: |
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194 return "msdos" ; |
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195 # endif |
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196 # ifdef MOUNT_LFS |
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197 case MOUNT_LFS: |
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198 return "lfs" ; |
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199 # endif |
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200 # ifdef MOUNT_LOFS |
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201 case MOUNT_LOFS: |
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202 return "lofs" ; |
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203 # endif |
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204 # ifdef MOUNT_FDESC |
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205 case MOUNT_FDESC: |
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206 return "fdesc" ; |
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207 # endif |
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208 # ifdef MOUNT_PORTAL |
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209 case MOUNT_PORTAL: |
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210 return "portal" ; |
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211 # endif |
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212 # ifdef MOUNT_NULL |
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213 case MOUNT_NULL: |
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214 return "null" ; |
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215 # endif |
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216 # ifdef MOUNT_UMAP |
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217 case MOUNT_UMAP: |
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218 return "umap" ; |
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219 # endif |
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220 # ifdef MOUNT_KERNFS |
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221 case MOUNT_KERNFS: |
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222 return "kernfs" ; |
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223 # endif |
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224 # ifdef MOUNT_PROCFS |
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225 case MOUNT_PROCFS: |
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226 return "procfs" ; |
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227 # endif |
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228 # ifdef MOUNT_AFS |
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229 case MOUNT_AFS: |
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230 return "afs" ; |
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231 # endif |
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232 # ifdef MOUNT_CD9660 |
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233 case MOUNT_CD9660: |
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234 return "cd9660" ; |
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235 # endif |
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236 # ifdef MOUNT_UNION |
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237 case MOUNT_UNION: |
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238 return "union" ; |
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239 # endif |
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240 # ifdef MOUNT_DEVFS |
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241 case MOUNT_DEVFS: |
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242 return "devfs" ; |
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243 # endif |
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244 # ifdef MOUNT_EXT2FS |
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245 case MOUNT_EXT2FS: |
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246 return "ext2fs" ; |
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247 # endif |
| 5 | 248 default: |
| 249 return "?"; | |
| 250 } | |
| 251 } | |
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252 # endif /* ! HAVE_F_FSTYPENAME_IN_STATFS */ |
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253 |
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254 /* __NetBSD__ || BSD_NET2 || __OpenBSD__ */ |
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255 static char * |
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256 fsp_to_string (const struct statfs *fsp) |
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257 { |
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258 # if defined HAVE_F_FSTYPENAME_IN_STATFS |
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259 return xstrdup (fsp->f_fstypename); |
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260 # else |
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261 return fstype_to_string (fsp->f_type); |
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262 # endif |
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263 } |
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264 |
| 5 | 265 #endif /* MOUNTED_GETMNTINFO */ |
| 266 | |
| 267 #ifdef MOUNTED_VMOUNT /* AIX. */ | |
| 268 static char * | |
| 269 fstype_to_string (t) | |
| 270 int t; | |
| 271 { | |
| 272 struct vfs_ent *e; | |
| 273 | |
| 274 e = getvfsbytype (t); | |
| 275 if (!e || !e->vfsent_name) | |
| 276 return "none"; | |
| 277 else | |
| 278 return e->vfsent_name; | |
| 279 } | |
| 280 #endif /* MOUNTED_VMOUNT */ | |
| 281 | |
| 282 /* Return a list of the currently mounted filesystems, or NULL on error. | |
| 283 Add each entry to the tail of the list so that they stay in order. | |
| 284 If NEED_FS_TYPE is nonzero, ensure that the filesystem type fields in | |
| 285 the returned list are valid. Otherwise, they might not be. | |
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286 If ALL_FS is positive, return all entries; if zero, omit entries |
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287 for filesystems that are automounter (dummy) entries; if negative, |
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288 also omit non-local filesystems. */ |
| 5 | 289 |
| 290 struct mount_entry * | |
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291 read_filesystem_list (int need_fs_type, int all_fs) |
| 5 | 292 { |
| 293 struct mount_entry *mount_list; | |
| 294 struct mount_entry *me; | |
| 1413 | 295 struct mount_entry **mtail = &mount_list; |
| 5 | 296 |
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297 #ifdef MOUNTED_LISTMNTENT |
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298 { |
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299 struct tabmntent *mntlist, *p; |
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300 struct mntent *mnt; |
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301 struct mount_entry *me; |
| 876 | 302 |
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303 /* the third and fourth arguments could be used to filter mounts, |
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304 but Crays doesn't seem to have any mounts that we want to |
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305 remove. Specifically, automount create normal NFS mounts. |
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306 */ |
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307 |
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308 if(listmntent(&mntlist, KMTAB, NULL, NULL) < 0) |
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309 return NULL; |
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310 for (p = mntlist; p; p = p->next) { |
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311 mnt = p->ment; |
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312 if (all_fs < 0 && REMOTE_FS_TYPE (mnt->mnt_type)) |
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313 continue; |
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314 me = (struct mount_entry*) xmalloc(sizeof (struct mount_entry)); |
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315 me->me_devname = xstrdup(mnt->mnt_fsname); |
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316 me->me_mountdir = xstrdup(mnt->mnt_dir); |
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317 me->me_type = xstrdup(mnt->mnt_type); |
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318 me->me_dev = -1; |
| 1413 | 319 *mtail = me; |
| 320 mtail = &me->me_next; | |
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321 } |
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322 freemntlist(mntlist); |
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323 } |
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324 #endif |
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325 |
| 5 | 326 #ifdef MOUNTED_GETMNTENT1 /* 4.3BSD, SunOS, HP-UX, Dynix, Irix. */ |
| 327 { | |
| 328 struct mntent *mnt; | |
| 329 char *table = MOUNTED; | |
| 330 FILE *fp; | |
| 331 char *devopt; | |
| 332 | |
| 333 fp = setmntent (table, "r"); | |
| 334 if (fp == NULL) | |
| 335 return NULL; | |
| 336 | |
| 337 while ((mnt = getmntent (fp))) | |
| 338 { | |
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339 if (all_fs <= 0 && (!strcmp (mnt->mnt_type, "ignore") |
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340 || !strcmp (mnt->mnt_type, "auto"))) |
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341 continue; |
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342 if (all_fs < 0 && REMOTE_FS_TYPE (mnt->mnt_type)) |
| 5 | 343 continue; |
| 344 | |
| 345 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); | |
| 346 me->me_devname = xstrdup (mnt->mnt_fsname); | |
| 347 me->me_mountdir = xstrdup (mnt->mnt_dir); | |
| 348 me->me_type = xstrdup (mnt->mnt_type); | |
| 349 devopt = strstr (mnt->mnt_opts, "dev="); | |
| 350 if (devopt) | |
| 351 { | |
| 352 if (devopt[4] == '0' && (devopt[5] == 'x' || devopt[5] == 'X')) | |
| 353 me->me_dev = xatoi (devopt + 6); | |
| 354 else | |
| 355 me->me_dev = xatoi (devopt + 4); | |
| 356 } | |
| 357 else | |
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358 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ |
| 5 | 359 |
| 360 /* Add to the linked list. */ | |
| 1413 | 361 *mtail = me; |
| 362 mtail = &me->me_next; | |
| 5 | 363 } |
| 364 | |
| 365 if (endmntent (fp) == 0) | |
| 1413 | 366 goto free_then_fail; |
| 5 | 367 } |
| 368 #endif /* MOUNTED_GETMNTENT1. */ | |
| 369 | |
| 370 #ifdef MOUNTED_GETMNTINFO /* 4.4BSD. */ | |
| 371 { | |
| 372 struct statfs *fsp; | |
| 373 int entries; | |
| 374 | |
| 375 entries = getmntinfo (&fsp, MNT_NOWAIT); | |
| 376 if (entries < 0) | |
| 377 return NULL; | |
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378 for (; entries-- > 0; fsp++) |
| 5 | 379 { |
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380 if (all_fs < 0) |
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381 { |
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382 # ifdef HAVE_F_FSTYPENAME_IN_STATFS |
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383 if (REMOTE_FS_TYPE (fsp->f_fstypename)) |
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384 continue; |
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385 # else |
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386 # ifdef MOUNT_NFS |
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387 if (REMOTE_FS_TYPE (fstype_to_string (fsp->f_type))) |
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388 continue; |
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389 # endif |
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390 # endif |
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391 } |
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392 |
| 5 | 393 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 394 me->me_devname = xstrdup (fsp->f_mntfromname); | |
| 395 me->me_mountdir = xstrdup (fsp->f_mntonname); | |
|
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396 me->me_type = fsp_to_string (fsp); |
|
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397 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ |
| 5 | 398 |
| 399 /* Add to the linked list. */ | |
| 1413 | 400 *mtail = me; |
| 401 mtail = &me->me_next; | |
| 5 | 402 } |
| 403 } | |
| 404 #endif /* MOUNTED_GETMNTINFO */ | |
| 405 | |
| 406 #ifdef MOUNTED_GETMNT /* Ultrix. */ | |
| 407 { | |
| 408 int offset = 0; | |
| 409 int val; | |
| 410 struct fs_data fsd; | |
| 411 | |
| 1413 | 412 while (errno = 0, |
| 413 0 <= (val = getmnt (&offset, &fsd, sizeof (fsd), NOSTAT_MANY, | |
| 414 (char *) 0))) | |
| 5 | 415 { |
|
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416 if (all_fs < 0 && REMOTE_FS_TYPE (gt_names[fsd.fd_req.fstype])) |
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417 continue; |
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418 |
| 5 | 419 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 420 me->me_devname = xstrdup (fsd.fd_req.devname); | |
| 421 me->me_mountdir = xstrdup (fsd.fd_req.path); | |
| 422 me->me_type = gt_names[fsd.fd_req.fstype]; | |
| 423 me->me_dev = fsd.fd_req.dev; | |
| 424 | |
| 425 /* Add to the linked list. */ | |
| 1413 | 426 *mtail = me; |
| 427 mtail = &me->me_next; | |
| 5 | 428 } |
| 429 if (val < 0) | |
| 1413 | 430 goto free_then_fail; |
| 5 | 431 } |
| 432 #endif /* MOUNTED_GETMNT. */ | |
| 433 | |
| 326 | 434 #if defined (MOUNTED_GETFSSTAT) /* __alpha running OSF_1 */ |
| 435 { | |
| 436 int numsys, counter, bufsize; | |
| 437 struct statfs *stats; | |
| 438 | |
| 439 numsys = getfsstat ((struct statfs *)0, 0L, MNT_WAIT); | |
| 440 if (numsys < 0) | |
| 441 return (NULL); | |
| 442 | |
| 443 bufsize = (1 + numsys) * sizeof (struct statfs); | |
| 444 stats = (struct statfs *)xmalloc (bufsize); | |
| 445 numsys = getfsstat (stats, bufsize, MNT_WAIT); | |
| 446 | |
| 447 if (numsys < 0) | |
| 448 { | |
| 449 free (stats); | |
| 450 return (NULL); | |
| 451 } | |
| 452 | |
| 453 for (counter = 0; counter < numsys; counter++) | |
| 454 { | |
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455 if (all_fs < 0 && REMOTE_FS_TYPE (mnt_names[stats[counter].f_type])) |
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456 continue; |
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457 |
| 326 | 458 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 459 me->me_devname = xstrdup (stats[counter].f_mntfromname); | |
| 460 me->me_mountdir = xstrdup (stats[counter].f_mntonname); | |
| 461 me->me_type = mnt_names[stats[counter].f_type]; | |
|
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462 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ |
| 326 | 463 |
| 464 /* Add to the linked list. */ | |
| 1413 | 465 *mtail = me; |
| 466 mtail = &me->me_next; | |
| 326 | 467 } |
| 468 | |
| 469 free (stats); | |
| 470 } | |
| 471 #endif /* MOUNTED_GETFSSTAT */ | |
| 472 | |
| 5 | 473 #if defined (MOUNTED_FREAD) || defined (MOUNTED_FREAD_FSTYP) /* SVR[23]. */ |
| 474 { | |
| 475 struct mnttab mnt; | |
| 476 char *table = "/etc/mnttab"; | |
| 477 FILE *fp; | |
| 478 | |
| 479 fp = fopen (table, "r"); | |
| 480 if (fp == NULL) | |
| 481 return NULL; | |
| 482 | |
| 483 while (fread (&mnt, sizeof mnt, 1, fp) > 0) | |
| 484 { | |
|
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485 char *fs_type = ""; |
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486 |
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487 # ifdef GETFSTYP /* SVR3. */ |
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488 if (need_fs_type || all_fs < 0) |
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489 { |
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490 struct statfs fsd; |
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491 char typebuf[FSTYPSZ]; |
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492 |
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493 if (statfs (mnt.mt_filsys, &fsd, sizeof fsd, 0) != -1 |
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494 && sysfs (GETFSTYP, fsd.f_fstyp, typebuf) != -1) |
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495 { |
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496 if (all_fs < 0 && REMOTE_FS_TYPE (typebuf)) |
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497 continue; |
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498 fs_type = xstrdup (typebuf); |
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499 } |
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500 } |
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501 # endif |
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502 |
| 5 | 503 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 917 | 504 # ifdef GETFSTYP /* SVR3. */ |
| 5 | 505 me->me_devname = xstrdup (mnt.mt_dev); |
| 917 | 506 # else |
| 5 | 507 me->me_devname = xmalloc (strlen (mnt.mt_dev) + 6); |
| 508 strcpy (me->me_devname, "/dev/"); | |
| 509 strcpy (me->me_devname + 5, mnt.mt_dev); | |
| 917 | 510 # endif |
| 5 | 511 me->me_mountdir = xstrdup (mnt.mt_filsys); |
|
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512 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ |
|
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513 me->me_type = fs_type; |
| 5 | 514 |
| 515 /* Add to the linked list. */ | |
| 1413 | 516 *mtail = me; |
| 517 mtail = &me->me_next; | |
| 518 } | |
| 519 | |
| 520 if (ferror (fp)) | |
| 521 { | |
| 522 int saved_errno = errno; | |
| 523 fclose (fp); | |
| 524 errno = saved_errno; | |
| 525 goto free_then_fail; | |
| 5 | 526 } |
| 527 | |
| 528 if (fclose (fp) == EOF) | |
| 1413 | 529 goto free_then_fail; |
| 5 | 530 } |
| 531 #endif /* MOUNTED_FREAD || MOUNTED_FREAD_FSTYP. */ | |
| 532 | |
| 326 | 533 #ifdef MOUNTED_GETMNTTBL /* DolphinOS goes it's own way */ |
| 534 { | |
| 535 struct mntent **mnttbl=getmnttbl(),**ent; | |
| 536 for (ent=mnttbl;*ent;ent++) | |
| 537 { | |
|
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538 if (all_fs < 0 && REMOTE_FS_TYPE ((*ent)->mt_fstype)) |
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539 continue; |
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540 |
| 326 | 541 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 542 me->me_devname = xstrdup ( (*ent)->mt_resource); | |
| 543 me->me_mountdir = xstrdup( (*ent)->mt_directory); | |
| 544 me->me_type = xstrdup ((*ent)->mt_fstype); | |
|
492
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|
545 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ |
| 326 | 546 |
| 547 /* Add to the linked list. */ | |
| 1413 | 548 *mtail = me; |
| 549 mtail = &me->me_next; | |
| 326 | 550 } |
| 551 endmnttbl(); | |
| 552 } | |
| 553 #endif | |
| 554 | |
| 5 | 555 #ifdef MOUNTED_GETMNTENT2 /* SVR4. */ |
| 556 { | |
| 557 struct mnttab mnt; | |
| 558 char *table = MNTTAB; | |
| 559 FILE *fp; | |
| 560 int ret; | |
|
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561 int lockfd = -1; |
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562 |
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563 # if defined F_RDLCK && defined F_SETLKW |
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564 /* MNTTAB_LOCK is a macro name of our own invention; it's not present in |
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565 e.g. Solaris 2.6. If the SVR4 folks ever define a macro |
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566 for this file name, we should use their macro name instead. |
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567 (Why not just lock MNTTAB directly? We don't know.) */ |
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568 # ifndef MNTTAB_LOCK |
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569 # define MNTTAB_LOCK "/etc/.mnttab.lock" |
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570 # endif |
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571 lockfd = open (MNTTAB_LOCK, O_RDONLY); |
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572 if (0 <= lockfd) |
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573 { |
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574 struct flock flock; |
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575 flock.l_type = F_RDLCK; |
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576 flock.l_whence = SEEK_SET; |
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577 flock.l_start = 0; |
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578 flock.l_len = 0; |
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579 while (fcntl (lockfd, F_SETLKW, &flock) == -1) |
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580 if (errno != EINTR) |
| 1413 | 581 { |
| 582 int saved_errno = errno; | |
| 583 close (lockfd); | |
| 584 errno = saved_errno; | |
| 585 return NULL; | |
| 586 } | |
|
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587 } |
| 1413 | 588 else if (errno != ENOENT) |
| 589 return NULL; | |
|
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590 # endif |
| 5 | 591 |
| 1413 | 592 errno = 0; |
| 5 | 593 fp = fopen (table, "r"); |
| 594 if (fp == NULL) | |
| 1413 | 595 ret = errno; |
| 1401 | 596 else |
|
1400
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597 { |
| 1401 | 598 while ((ret = getmntent (fp, &mnt)) == 0) |
| 599 { | |
| 600 /* Don't show automounted filesystems twice on e.g., Solaris. */ | |
|
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601 if (all_fs <= 0 && MNT_IGNORE (&mnt)) |
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602 continue; |
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603 |
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604 if (all_fs < 0 && REMOTE_FS_TYPE (mnt.mnt_fstype)) |
| 1401 | 605 continue; |
| 606 | |
| 607 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); | |
| 608 me->me_devname = xstrdup (mnt.mnt_special); | |
| 609 me->me_mountdir = xstrdup (mnt.mnt_mountp); | |
| 610 me->me_type = xstrdup (mnt.mnt_fstype); | |
| 611 me->me_dev = (dev_t) -1; /* Magic; means not known yet. */ | |
| 612 | |
| 613 /* Add to the linked list. */ | |
| 1413 | 614 *mtail = me; |
| 615 mtail = &me->me_next; | |
| 1401 | 616 } |
| 617 | |
| 1413 | 618 ret = fclose (fp) == EOF ? errno : 0 < ret ? 0 : -1; |
|
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(read_filesystem_list) [MOUNTED_GETMNTENT2]:
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diff
changeset
|
619 } |
| 5 | 620 |
| 1401 | 621 if (0 <= lockfd && close (lockfd) != 0) |
| 1413 | 622 ret = errno; |
| 5 | 623 |
| 1413 | 624 if (0 <= ret) |
| 625 { | |
| 626 errno = ret; | |
| 627 goto free_then_fail; | |
| 628 } | |
| 5 | 629 } |
| 630 #endif /* MOUNTED_GETMNTENT2. */ | |
| 631 | |
| 632 #ifdef MOUNTED_VMOUNT /* AIX. */ | |
| 633 { | |
| 634 int bufsize; | |
| 635 char *entries, *thisent; | |
| 636 struct vmount *vmp; | |
| 637 | |
| 638 /* Ask how many bytes to allocate for the mounted filesystem info. */ | |
| 639 mntctl (MCTL_QUERY, sizeof bufsize, (struct vmount *) &bufsize); | |
| 640 entries = xmalloc (bufsize); | |
| 641 | |
| 642 /* Get the list of mounted filesystems. */ | |
| 643 mntctl (MCTL_QUERY, bufsize, (struct vmount *) entries); | |
| 644 | |
| 645 for (thisent = entries; thisent < entries + bufsize; | |
| 646 thisent += vmp->vmt_length) | |
| 647 { | |
| 648 vmp = (struct vmount *) thisent; | |
|
1443
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(read_filesystem_list): If all_fs is negative, omit non-local filesytems.
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649 if (all_fs < 0 && vmp->vmt_flags & MNT_REMOTE) |
|
13bcee72981f
(read_filesystem_list): If all_fs is negative, omit non-local filesytems.
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parents:
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diff
changeset
|
650 continue; |
| 5 | 651 me = (struct mount_entry *) xmalloc (sizeof (struct mount_entry)); |
| 652 if (vmp->vmt_flags & MNT_REMOTE) | |
| 653 { | |
| 654 char *host, *path; | |
| 655 | |
| 656 /* Prepend the remote pathname. */ | |
| 657 host = thisent + vmp->vmt_data[VMT_HOSTNAME].vmt_off; | |
| 658 path = thisent + vmp->vmt_data[VMT_OBJECT].vmt_off; | |
| 659 me->me_devname = xmalloc (strlen (host) + strlen (path) + 2); | |
| 660 strcpy (me->me_devname, host); | |
| 661 strcat (me->me_devname, ":"); | |
| 662 strcat (me->me_devname, path); | |
| 663 } | |
| 664 else | |
| 665 { | |
| 326 | 666 me->me_devname = xstrdup (thisent + |
| 5 | 667 vmp->vmt_data[VMT_OBJECT].vmt_off); |
| 668 } | |
| 669 me->me_mountdir = xstrdup (thisent + vmp->vmt_data[VMT_STUB].vmt_off); | |
| 670 me->me_type = xstrdup (fstype_to_string (vmp->vmt_gfstype)); | |
|
492
33a21db1201a
(read_filesystem_list): Cast -1 to dev_t before assignment.
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parents:
326
diff
changeset
|
671 me->me_dev = (dev_t) -1; /* vmt_fsid might be the info we want. */ |
| 5 | 672 |
| 673 /* Add to the linked list. */ | |
| 1413 | 674 *mtail = me; |
| 675 mtail = &me->me_next; | |
| 5 | 676 } |
| 677 free (entries); | |
| 678 } | |
| 679 #endif /* MOUNTED_VMOUNT. */ | |
| 680 | |
| 1413 | 681 *mtail = NULL; |
| 5 | 682 return mount_list; |
| 1413 | 683 |
| 684 | |
| 685 free_then_fail: | |
| 686 { | |
| 687 int saved_errno = errno; | |
| 688 *mtail = NULL; | |
|
1436
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(read_filesystem_list): Fix more memory leaks on failure.
Jim Meyering <jim@meyering.net>
parents:
1413
diff
changeset
|
689 |
| 1413 | 690 while (mount_list) |
| 691 { | |
| 692 me = mount_list->me_next; | |
|
1436
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(read_filesystem_list): Fix more memory leaks on failure.
Jim Meyering <jim@meyering.net>
parents:
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diff
changeset
|
693 free (mount_list->me_devname); |
|
5919c19d9a1a
(read_filesystem_list): Fix more memory leaks on failure.
Jim Meyering <jim@meyering.net>
parents:
1413
diff
changeset
|
694 free (mount_list->me_mountdir); |
|
5919c19d9a1a
(read_filesystem_list): Fix more memory leaks on failure.
Jim Meyering <jim@meyering.net>
parents:
1413
diff
changeset
|
695 /* FIXME: me_type is not always malloced. */ |
| 1413 | 696 free (mount_list); |
| 697 mount_list = me; | |
| 698 } | |
| 699 | |
| 700 errno = saved_errno; | |
| 701 return NULL; | |
| 702 } | |
| 5 | 703 } |