servers/vfs/request.h

   1
   2 /* Low level request messages are built and sent by wrapper functions.
   3  * This file contains the request and response structures for accessing
   4  * those wrappers functions.
   5  */
   6
   7 #include <sys/types.h>
   8
   9
  10 /* Structure for REQ_GETNODE and REQ_PUTNODE requests */
  11 typedef struct node_req {
  12         endpoint_t fs_e;
  13         ino_t inode_nr;
  14 } node_req_t;
  15
  16
  17 /* Structure for response that contains inode details */
  18 typedef struct node_details {
  19         endpoint_t fs_e;
  20         ino_t inode_nr;
  21         mode_t fmode;
  22         off_t fsize;
  23         unsigned short inode_index;
  24         /* For char/block special files */
  25         dev_t dev;
  26
  27         /* Fields used by the exec() syscall */
  28         uid_t uid;
  29         gid_t gid;
  30         time_t ctime;
  31 } node_details_t;
  32
  33
  34 /* Structure for REQ_OPEN request */
  35 typedef struct open_req {
  36         endpoint_t fs_e;
  37         ino_t inode_nr;
  38         char *lastc;
  39         int oflags;
  40         mode_t omode;
  41         uid_t uid;
  42         gid_t gid;
  43 } open_req_t;
  44
  45
  46 /* Structure for REQ_READ and REQ_WRITE request */
  47 typedef struct readwrite_req {
  48         int rw_flag;
  49         endpoint_t fs_e;
  50         endpoint_t user_e;
  51         ino_t inode_nr;
  52         unsigned short inode_index;
  53         int seg;
  54         u64_t pos;
  55         unsigned int num_of_bytes;
  56         char *user_addr;
  57 } readwrite_req_t;
  58
  59
  60 /* Structure for response of REQ_READ and REQ_WRITE */
  61 typedef struct readwrite_res {
  62         u64_t new_pos;
  63         unsigned int cum_io;
  64 } readwrite_res_t;
  65
  66
  67 /* Structure for REQ_PIPE request */
  68 typedef struct pipe_req {
  69         int fs_e;
  70         uid_t uid;
  71         gid_t gid;
  72 } pipe_req_t;
  73
  74
  75 /* Structure for REQ_CLONE_OPCL request */
  76 typedef struct clone_opcl_req {
  77         int fs_e;
  78         dev_t dev;
  79 } clone_opcl_req_t;
  80
  81
  82 /* Structure for REQ_FTRUNC request */
  83 typedef struct ftrunc_req {
  84         int fs_e;
  85         ino_t inode_nr;
  86         off_t start;
  87         off_t end;
  88 } ftrunc_req_t;
  89
  90
  91 /* Structure for REQ_CHOWN request */
  92 typedef struct chown_req {
  93         int fs_e;
  94         ino_t inode_nr;
  95         uid_t uid;
  96         gid_t gid;
  97         uid_t newuid;
  98         gid_t newgid;
  99 } chown_req_t;
 100
 101
 102 /* Structure for REQ_CHMOD request */
 103 typedef struct chmod_req {
 104         int fs_e;
 105         ino_t inode_nr;
 106         uid_t uid;
 107         gid_t gid;
 108         mode_t rmode;
 109 } chmod_req_t;
 110
 111
 112 /* Structure for REQ_ACCESS request */
 113 typedef struct access_req {
 114         int fs_e;
 115         ino_t inode_nr;
 116         uid_t uid;
 117         gid_t gid;
 118         mode_t amode;
 119 } access_req_t;
 120
 121
 122 /* Structure for REQ_MKNOD request */
 123 typedef struct mknod_req {
 124         int fs_e;
 125         ino_t inode_nr;
 126         uid_t uid;
 127         gid_t gid;
 128         mode_t rmode;
 129         dev_t dev;
 130         char *lastc;
 131 } mknod_req_t;
 132
 133
 134 /* Structure for REQ_MKDIR request */
 135 typedef struct mkdir_req {
 136         int fs_e;
 137         ino_t d_inode_nr;
 138         uid_t uid;
 139         gid_t gid;
 140         mode_t rmode;
 141         char *lastc;
 142 } mkdir_req_t;
 143
 144
 145 /* Structure for REQ_UNLINK request */
 146 typedef struct unlink_req {
 147         int fs_e;
 148         ino_t d_inode_nr;
 149         uid_t uid;
 150         gid_t gid;
 151         char *lastc;
 152 } unlink_req_t;
 153
 154
 155 /* Structure for REQ_UTIME request */
 156 typedef struct utime_req {
 157         int fs_e;
 158         ino_t inode_nr;
 159         uid_t uid;
 160         gid_t gid;
 161         time_t actime;
 162         time_t modtime;
 163 } utime_req_t;
 164
 165
 166 /* Structure for REQ_LINK request */
 167 typedef struct link_req {
 168         endpoint_t fs_e;
 169         ino_t linked_file;
 170         ino_t link_parent;
 171         uid_t uid;
 172         gid_t gid;
 173         char *lastc;
 174 } link_req_t;
 175
 176
 177 /* Structure for REQ_SLINK request */
 178 typedef struct slink_req {
 179         endpoint_t fs_e;
 180         ino_t parent_dir;
 181         uid_t uid;
 182         gid_t gid;
 183         char *lastc;
 184         endpoint_t who_e;
 185         char *path_addr;
 186         unsigned short path_length;
 187 } slink_req_t;
 188
 189
 190 /* Structure for REQ_RDLINK request */
 191 typedef struct rdlink_req {
 192         endpoint_t fs_e;
 193         ino_t inode_nr;
 194         uid_t uid;
 195         gid_t gid;
 196         endpoint_t who_e;
 197         char *path_buffer;
 198         unsigned short max_length;
 199 } rdlink_req_t;
 200
 201
 202 /* Structure for REQ_RENAME request */
 203 typedef struct rename_req {
 204         endpoint_t fs_e;
 205         ino_t old_dir;
 206         ino_t new_dir;
 207         uid_t uid;
 208         gid_t gid;
 209         char *old_name;
 210         char *new_name;
 211 } rename_req_t;
 212
 213
 214 /* Structure for REQ_MOUNTPOINT request */
 215 typedef struct mountpoint_req {
 216         endpoint_t fs_e;
 217         ino_t inode_nr;
 218         uid_t uid;
 219         gid_t gid;
 220 } mountpoint_req_t;
 221
 222
 223 /* Structure for REQ_READSUPER request */
 224 typedef struct readsuper_req {
 225         endpoint_t fs_e;
 226         time_t boottime;
 227         endpoint_t driver_e;
 228         dev_t dev;
 229         char *slink_storage;
 230         char isroot;
 231         char readonly;
 232 } readsuper_req_t;
 233
 234 /* Structure for response of READSUPER request */
 235 typedef struct readsuper_res {
 236         endpoint_t fs_e;
 237         ino_t inode_nr;
 238         mode_t fmode;
 239         off_t fsize;
 240         int blocksize;
 241         off_t maxsize;
 242 } readsuper_res_t;
 243
 244
 245 /* Structure for REQ_TRUNC request */
 246 typedef struct trunc_req {
 247         endpoint_t fs_e;
 248         ino_t inode_nr;
 249         uid_t uid;
 250         gid_t gid;
 251         off_t length;
 252 } trunc_req_t;
 253
 254
 255 /* Structure for REQ_LOOKUP request */
 256 typedef struct lookup_req {
 257         /* Fields filled in by the caller */
 258         char *path;
 259         char *lastc;
 260         int flags;
 261         /* Fields filled in by the path name traversal method */
 262         endpoint_t fs_e;
 263         ino_t start_dir;
 264         ino_t root_dir;     /* process' root directory */
 265         uid_t uid;
 266         gid_t gid;
 267         unsigned char symloop;
 268 } lookup_req_t;
 269
 270
 271 /* Structure for a lookup response */
 272 typedef struct lookup_res {
 273         endpoint_t fs_e;
 274         ino_t inode_nr;
 275         mode_t fmode;
 276         off_t fsize;
 277         uid_t uid;
 278         gid_t gid;
 279         /* For char/block special files */
 280         dev_t dev;
 281
 282         /* Fields used for handling mount point and symbolic links */
 283         int char_processed;
 284         unsigned char symloop;
 285 } lookup_res_t;
 286
 287
 288 /* Structure for REQ_BREAD and REQ_BWRITE request (block spec files) */
 289 typedef struct breadwrite_req {
 290         int rw_flag;
 291         short blocksize;
 292         endpoint_t fs_e;
 293         endpoint_t user_e;
 294         endpoint_t driver_e;
 295         dev_t dev;
 296         u64_t pos;
 297         unsigned int num_of_bytes;
 298         char *user_addr;
 299 } breadwrite_req_t;
 300
 301
 302
 303 /* Structure for REQ_ request */