lib/util/gpfswrap.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Wrapper for GPFS library
   4  *  Copyright (C) Volker Lendecke 2005
   5  *  Copyright (C) Christof Schmitt 2015
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "replace.h"
  22 #include "gpfswrap.h"
  23
  24 static int (*gpfs_set_share_fn)(int fd, unsigned int allow, unsigned int deny);
  25 static int (*gpfs_set_lease_fn)(int fd, unsigned int type);
  26 static int (*gpfs_getacl_fn)(char *pathname, int flags, void *acl);
  27 static int (*gpfs_putacl_fn)(char *pathname, int flags, void *acl);
  28 static int (*gpfs_get_realfilename_path_fn)(char *pathname, char *filenamep,
  29                                             int *len);
  30 static int (*gpfs_set_winattrs_path_fn)(char *pathname, int flags,
  31                                         struct gpfs_winattr *attrs);
  32 static int (*gpfs_set_winattrs_fn)(int fd, int flags,
  33                                    struct gpfs_winattr *attrs);
  34 static int (*gpfs_get_winattrs_path_fn)(char *pathname,
  35                                         struct gpfs_winattr *attrs);
  36 static int (*gpfs_get_winattrs_fn)(int fd, struct gpfs_winattr *attrs);
  37 static int (*gpfs_ftruncate_fn)(int fd, gpfs_off64_t length);
  38 static int (*gpfs_lib_init_fn)(int flags);
  39 static int (*gpfs_set_times_path_fn)(char *pathname, int flags,
  40                                      gpfs_timestruc_t times[4]);
  41 static int (*gpfs_quotactl_fn)(char *pathname, int cmd, int id, void *bufp);
  42 static int (*gpfs_getfilesetid_fn)(char *pathname, char *name, int *idp);
  43 static int (*gpfs_init_trace_fn)(void);
  44 static int (*gpfs_query_trace_fn)(void);
  45 static void (*gpfs_add_trace_fn)(int level, const char *msg);
  46 static void (*gpfs_fini_trace_fn)(void);
  47
  48 int gpfswrap_init(void)
  49 {
  50         static void *l;
  51
  52         if (l != NULL) {
  53                 return 0;
  54         }
  55
  56         l = dlopen("libgpfs.so", RTLD_LAZY);
  57         if (l == NULL) {
  58                 return -1;
  59         }
  60
  61         gpfs_set_share_fn             = dlsym(l, "gpfs_set_share");
  62         gpfs_set_lease_fn             = dlsym(l, "gpfs_set_lease");
  63         gpfs_getacl_fn                = dlsym(l, "gpfs_getacl");
  64         gpfs_putacl_fn                = dlsym(l, "gpfs_putacl");
  65         gpfs_get_realfilename_path_fn = dlsym(l, "gpfs_get_realfilename_path");
  66         gpfs_set_winattrs_path_fn     = dlsym(l, "gpfs_set_winattrs_path");
  67         gpfs_set_winattrs_fn          = dlsym(l, "gpfs_set_winattrs");
  68         gpfs_get_winattrs_path_fn     = dlsym(l, "gpfs_get_winattrs_path");
  69         gpfs_get_winattrs_fn          = dlsym(l, "gpfs_get_winattrs");
  70         gpfs_ftruncate_fn             = dlsym(l, "gpfs_ftruncate");
  71         gpfs_lib_init_fn              = dlsym(l, "gpfs_lib_init");
  72         gpfs_set_times_path_fn        = dlsym(l, "gpfs_set_times_path");
  73         gpfs_quotactl_fn              = dlsym(l, "gpfs_quotactl");
  74         gpfs_getfilesetid_fn          = dlsym(l, "gpfs_getfilesetid");
  75         gpfs_init_trace_fn            = dlsym(l, "gpfs_init_trace");
  76         gpfs_query_trace_fn           = dlsym(l, "gpfs_query_trace");
  77         gpfs_add_trace_fn             = dlsym(l, "gpfs_add_trace");
  78         gpfs_fini_trace_fn            = dlsym(l, "gpfs_fini_trace");
  79
  80         return 0;
  81 }
  82
  83 int gpfswrap_set_share(int fd, unsigned int allow, unsigned int deny)
  84 {
  85         if (gpfs_set_share_fn == NULL) {
  86                 errno = ENOSYS;
  87                 return -1;
  88         }
  89
  90         return gpfs_set_share_fn(fd, allow, deny);
  91 }
  92
  93 int gpfswrap_set_lease(int fd, unsigned int type)
  94 {
  95         if (gpfs_set_lease_fn == NULL) {
  96                 errno = ENOSYS;
  97                 return -1;
  98         }
  99
 100         return gpfs_set_lease_fn(fd, type);
 101 }
 102
 103 int gpfswrap_getacl(char *pathname, int flags, void *acl)
 104 {
 105         if (gpfs_getacl_fn == NULL) {
 106                 errno = ENOSYS;
 107                 return -1;
 108         }
 109
 110         return gpfs_getacl_fn(pathname, flags, acl);
 111 }
 112
 113 int gpfswrap_putacl(char *pathname, int flags, void *acl)
 114 {
 115         if (gpfs_putacl_fn == NULL) {
 116                 errno = ENOSYS;
 117                 return -1;
 118         }
 119
 120         return gpfs_putacl_fn(pathname, flags, acl);
 121 }
 122
 123 int gpfswrap_get_realfilename_path(char *pathname, char *filenamep, int *len)
 124 {
 125         if (gpfs_get_realfilename_path_fn == NULL) {
 126                 errno = ENOSYS;
 127                 return -1;
 128         }
 129
 130         return gpfs_get_realfilename_path_fn(pathname, filenamep, len);
 131 }
 132
 133 int gpfswrap_set_winattrs_path(char *pathname, int flags,
 134                                struct gpfs_winattr *attrs)
 135 {
 136         if (gpfs_set_winattrs_path_fn == NULL) {
 137                 errno = ENOSYS;
 138                 return -1;
 139         }
 140
 141         return gpfs_set_winattrs_path_fn(pathname, flags, attrs);
 142 }
 143
 144 int gpfswrap_set_winattrs(int fd, int flags, struct gpfs_winattr *attrs)
 145 {
 146         if (gpfs_set_winattrs_fn == NULL) {
 147                 errno = ENOSYS;
 148                 return -1;
 149         }
 150
 151         return gpfs_set_winattrs_fn(fd, flags, attrs);
 152 }
 153
 154 int gpfswrap_get_winattrs_path(char *pathname, struct gpfs_winattr *attrs)
 155 {
 156         if (gpfs_get_winattrs_path_fn == NULL) {
 157                 errno = ENOSYS;
 158                 return -1;
 159         }
 160
 161         return gpfs_get_winattrs_path_fn(pathname, attrs);
 162 }
 163
 164 int gpfswrap_get_winattrs(int fd, struct gpfs_winattr *attrs)
 165 {
 166         if (gpfs_get_winattrs_fn == NULL) {
 167                 errno = ENOSYS;
 168                 return -1;
 169         }
 170
 171         return gpfs_get_winattrs_fn(fd, attrs);
 172 }
 173
 174 int gpfswrap_ftruncate(int fd, gpfs_off64_t length)
 175 {
 176         if (gpfs_ftruncate_fn == NULL) {
 177                 errno = ENOSYS;
 178                 return -1;
 179         }
 180
 181         return gpfs_ftruncate_fn(fd, length);
 182 }
 183
 184 int gpfswrap_lib_init(int flags)
 185 {
 186         if (gpfs_lib_init_fn == NULL) {
 187                 errno = ENOSYS;
 188                 return -1;
 189         }
 190
 191         return gpfs_lib_init_fn(flags);
 192 }
 193
 194 int gpfswrap_set_times_path(char *pathname, int flags,
 195                             gpfs_timestruc_t times[4])
 196 {
 197         if (gpfs_set_times_path_fn == NULL) {
 198                 errno = ENOSYS;
 199                 return -1;
 200         }
 201
 202         return gpfs_set_times_path_fn(pathname, flags, times);
 203 }
 204
 205 int gpfswrap_quotactl(char *pathname, int cmd, int id, void *bufp)
 206 {
 207         if (gpfs_quotactl_fn == NULL) {
 208                 errno = ENOSYS;
 209                 return -1;
 210         }
 211
 212         return gpfs_quotactl_fn(pathname, cmd, id, bufp);
 213 }
 214
 215 int gpfswrap_getfilesetid(char *pathname, char *name, int *idp)
 216 {
 217         if (gpfs_getfilesetid_fn == NULL) {
 218                 errno = ENOSYS;
 219                 return -1;
 220         }
 221
 222         return gpfs_getfilesetid_fn(pathname, name, idp);
 223 }
 224
 225 int gpfswrap_init_trace(void)
 226 {
 227         if (gpfs_init_trace_fn == NULL) {
 228                 errno = ENOSYS;
 229                 return -1;
 230         }
 231
 232         return gpfs_init_trace_fn();
 233 }
 234
 235 int gpfswrap_query_trace(void)
 236 {
 237         if (gpfs_query_trace_fn == NULL) {
 238                 errno = ENOSYS;
 239                 return -1;
 240         }
 241
 242         return gpfs_query_trace_fn();
 243 }
 244
 245 void gpfswrap_add_trace(int level, const char *msg)
 246 {
 247         if (gpfs_add_trace_fn == NULL) {
 248                 return;
 249         }
 250
 251         gpfs_add_trace_fn(level, msg);
 252 }
 253
 254 void gpfswrap_fini_trace(void)
 255 {
 256         if (gpfs_fini_trace_fn == NULL) {
 257                 return;
 258         }
 259
 260         gpfs_fini_trace_fn();
 261 }