RFC 1813 (rfc1813) - Page 2 of 127


NFS Version 3 Protocol Specification



Alternative Format: Original Text Document

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RFC 1813                 NFS Version 3 Protocol                June 1995


   3.3.1   GETATTR: Get file attributes . . . . . . . . . . . . . .  32
   3.3.2   SETATTR: Set file attributes . . . . . . . . . . . . . .  33
   3.3.3   LOOKUP: Lookup filename  . . . . . . . . . . . . . . . .  37
   3.3.4   ACCESS: Check access permission  . . . . . . . . . . . .  40
   3.3.5   READLINK: Read from symbolic link  . . . . . . . . . . .  44
   3.3.6   READ: Read from file . . . . . . . . . . . . . . . . . .  46
   3.3.7   WRITE: Write to file . . . . . . . . . . . . . . . . . .  49
   3.3.8   CREATE: Create a file  . . . . . . . . . . . . . . . . .  54
   3.3.9   MKDIR: Create a directory  . . . . . . . . . . . . . . .  58
   3.3.10  SYMLINK: Create a symbolic link  . . . . . . . . . . . .  61
   3.3.11  MKNOD: Create a special device . . . . . . . . . . . . .  63
   3.3.12  REMOVE: Remove a file  . . . . . . . . . . . . . . . . .  67
   3.3.13  RMDIR: Remove a directory  . . . . . . . . . . . . . . .  69
   3.3.14  RENAME: Rename a file or directory . . . . . . . . . . .  71
   3.3.15  LINK: Create link to an object . . . . . . . . . . . . .  74
   3.3.16  READDIR: Read From directory . . . . . . . . . . . . . .  76
   3.3.17  READDIRPLUS: Extended read from directory  . . . . . . .  80
   3.3.18  FSSTAT: Get dynamic file system information  . . . . . .  84
   3.3.19  FSINFO: Get static file system information . . . . . . .  86
   3.3.20  PATHCONF: Retrieve POSIX information . . . . . . . . . .  90
   3.3.21  COMMIT: Commit cached data on a server to stable storage  92
   4.    Implementation issues  . . . . . . . . . . . . . . . . . .  96
   4.1     Multiple version support . . . . . . . . . . . . . . . .  96
   4.2     Server/client relationship . . . . . . . . . . . . . . .  96
   4.3     Path name interpretation . . . . . . . . . . . . . . . .  97
   4.4     Permission issues  . . . . . . . . . . . . . . . . . . .  98
   4.5     Duplicate request cache  . . . . . . . . . . . . . . . .  99
   4.6     File name component handling . . . . . . . . . . . . . . 101
   4.7     Synchronous modifying operations . . . . . . . . . . . . 101
   4.8     Stable storage . . . . . . . . . . . . . . . . . . . . . 101
   4.9     Lookups and name resolution  . . . . . . . . . . . . . . 102
   4.10    Adaptive retransmission  . . . . . . . . . . . . . . . . 102
   4.11    Caching policies . . . . . . . . . . . . . . . . . . . . 102
   4.12    Stable versus unstable writes. . . . . . . . . . . . . . 103
   4.13    32 bit clients/servers and 64 bit clients/servers. . . . 104
   5.    Appendix I: Mount protocol . . . . . . . . . . . . . . . . 106
   5.1     RPC Information  . . . . . . . . . . . . . . . . . . . . 106
   5.1.1     Authentication . . . . . . . . . . . . . . . . . . . . 106
   5.1.2     Constants  . . . . . . . . . . . . . . . . . . . . . . 106
   5.1.3     Transport address  . . . . . . . . . . . . . . . . . . 106
   5.1.4     Sizes  . . . . . . . . . . . . . . . . . . . . . . . . 106
   5.1.5     Basic Data Types . . . . . . . . . . . . . . . . . . . 106
   5.2     Server Procedures  . . . . . . . . . . . . . . . . . . . 107
   5.2.0     NULL: Do nothing . . . . . . . . . . . . . . . . . . . 108
   5.2.1     MNT: Add mount entry . . . . . . . . . . . . . . . . . 109
   5.2.2     DUMP: Return mount entries . . . . . . . . . . . . . . 110
   5.2.3     UMNT: Remove mount entry . . . . . . . . . . . . . . . 111
   5.2.4     UMNTALL: Remove all mount entries  . . . . . . . . . . 112



Callaghan, el al             Informational


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