From 8ee3ee9c71418dbdb73d4350c17056024fb7ec41 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Sun, 15 Sep 2019 17:56:07 +0200 Subject: Replace file descriptor IO in data_writer with sqfs_file_t First, this commit moves the create-blocks-from-fd function over to libsquashfs and ports it to work on an sqfs_file_t instead. Second, the function in the data_writer that reads from a file descriptor is adjusted to use an sqfs_file_t instead. Finally, the tools that use it have to be adjusted accordingly. Signed-off-by: David Oberhollenzer --- include/sqfs/io.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'include/sqfs/io.h') diff --git a/include/sqfs/io.h b/include/sqfs/io.h index a544875..9784113 100644 --- a/include/sqfs/io.h +++ b/include/sqfs/io.h @@ -150,9 +150,31 @@ SQFS_API sqfs_file_t *sqfs_open_file(const char *filename, int flags); * reading sequentially. * * @param size The alleged "size" of the file. + * + * @return A pointer to a file object on success, NULL on allocation failure. */ SQFS_API sqfs_file_t *sqfs_get_stdin_file(uint64_t size); + +/** + * @brief Read a chunk from a file and turn it into a block that can be + * fed to a block processor. + * + * @member sqfs_file_t + * + * @param file A pointer to a file implementation. + * @param offset A byte offset into the file. + * @param size The number of bytes to read, starting at the given offset. + * @param user A user pointer to set for the block. + * @param flags The flags to store in the newly created block. + * @param out Returns a pointer to a block on success. + * + * @return Zero on success, an @ref E_SQFS_ERROR identifier on failure. + */ +SQFS_API int sqfs_file_create_block(sqfs_file_t *file, uint64_t offset, + size_t size, void *user, uint32_t flags, + sqfs_block_t **out); + #ifdef __cplusplus } #endif -- cgit v1.2.3