GPFS: Administration and Programming Reference - IRA Home

Chapter 9. GPFS programming interfaces
Table 9 summarizes the GPFS programming interfaces.
Table 9. GPFS programming interfaces
Interface Purpose
“gpfs_acl_t Structure” on page 279 Contains buffer mapping for the gpfs_getacl() and
gpfs_putacl() subroutines.
“gpfs_close_inodescan() Subroutine” on page 280 Closes an inode scan.
“gpfs_cmp_fssnapid() Subroutine” on page 281 Compares two file system snapshot IDs.
“gpfs_direntx_t Structure” on page 283 Contains attributes of a GPFS directory entry.
“gpfs_fcntl() Subroutine” on page 284 Performs operations on an open file.
“gpfs_fgetattrs() Subroutine” on page 287 Retrieves all extended file attributes in opaque format.
“gpfs_fputattrs() Subroutine” on page 288 Sets all the extended file attributes for a file.
“gpfs_free_fssnaphandle() Subroutine” on page 290 Frees a file system snapshot handle.
“gpfs_fssnap_handle_t Structure” on page 291 Contains a handle for a GPFS file system or snapshot.
“gpfs_fssnap_id_t Structure” on page 292 Contains a permanent identifier for a GPFS file system or
snapshot.
“gpfs_fstat() Subroutine” on page 293 Returns exact file status for a GPFS file.
“gpfs_get_fsname_from_fssnaphandle() Subroutine”
on page 294
“gpfs_get_fssnaphandle_by_fssnapid() Subroutine”
on page 295
“gpfs_get_fssnaphandle_by_name() Subroutine” on
page 296
“gpfs_get_fssnaphandle_by_path() Subroutine” on
page 298
“gpfs_get_fssnapid_from_fssnaphandle()
Subroutine” on page 299
“gpfs_get_pathname_from_fssnaphandle()
Subroutine” on page 301
Obtains a file system name from its snapshot handle.
Obtains a file system snapshot handle using its snapshot ID.
Obtains a file system snapshot handle using its name.
Obtains a file system snapshot handle using its path name.
Obtains a file system snapshot ID using its snapshot handle.
Obtains a file system path name using its snapshot handle.
“gpfs_get_snapdirname() Subroutine” on page 302 Obtains the name of the directory containing snapshots.
“gpfs_get_snapname_from_fssnaphandle()
Subroutine” on page 304
Obtains a snapshot name using its file system snapshot
handle.
“gpfs_getacl() Subroutine” on page 305 Retrieves the access control information for a GPFS file.
“gpfs_iattr_t Structure” on page 307 Contains attributes of a GPFS inode.
“gpfs_iclose() Subroutine” on page 309 Closes a file given its inode file handle.
“gpfs_ifile_t Structure” on page 310 Contains a handle for a GPFS inode.
“gpfs_igetattrs() Subroutine” on page 311 Obtains extended file attributes.
“gpfs_igetfilesetname() Subroutine” on page 313 Returns the name of the fileset defined by a fileset ID.
“gpfs_igetstoragepool() Subroutine” on page 315 Returns the name of the storage pool for the given storage
pool ID.
“gpfs_iopen() Subroutine” on page 317 Opens a file or directory by its inode number.
“gpfs_iread() Subroutine” on page 319 Reads a file opened by gpfs_iopen().
“gpfs_ireaddir() Subroutine” on page 321 Reads the next directory entry.
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