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Add lseek() function to IsoFileSource.

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This commit is contained in:
Vreixo Formoso
2008-03-08 18:34:41 +01:00
parent 69fe1d6074
commit bad03a9a2b
4 changed files with 146 additions and 0 deletions
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38
libisofs/libisofs.h
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@@ -559,6 +559,25 @@ struct IsoFileSource_Iface
* ISO_INTERRUPTED
*/
int (*read)(IsoFileSource *src, void *buf, size_t count);
/**
* Repositions the offset of the IsoFileSource (must be opened) to the
* given offset according to the value of flag.
*
* @param offset
* in bytes
* @param flag
* 0 The offset is set to offset bytes (SEEK_SET)
* 1 The offset is set to its current location plus offset bytes
* (SEEK_CUR)
* 2 The offset is set to the size of the file plus offset bytes
* (SEEK_END).
* @return
* Absolute offset posistion on the file, or < 0 on error. Cast the
* returning value to int to get a valid libisofs error.
* @since 0.6.4
*/
off_t (*lseek)(IsoFileSource *src, off_t offset, int flag);
/**
* Read a directory.
@@ -3216,6 +3235,25 @@ int iso_file_source_close(IsoFileSource *src);
*/
int iso_file_source_read(IsoFileSource *src, void *buf, size_t count);
/**
* Repositions the offset of the given IsoFileSource (must be opened) to the
* given offset according to the value of flag.
*
* @param offset
* in bytes
* @param flag
* 0 The offset is set to offset bytes (SEEK_SET)
* 1 The offset is set to its current location plus offset bytes
* (SEEK_CUR)
* 2 The offset is set to the size of the file plus offset bytes
* (SEEK_END).
* @return
* Absolute offset posistion on the file, or < 0 on error. Cast the
* returning value to int to get a valid libisofs error.
* @since 0.6.4
*/
off_t iso_file_source_lseek(IsoFileSource *src, off_t offset, int flag);
/**
* Read a directory.
*