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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-15 15:59:01 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-15 15:59:01 +0200
commit36205a44d68576a158c9f233a17abe5f8a3c63a0 (patch)
tree11ae83cb10b33726cb8e4c48abe4a5b69c9b9a8d /include
parente165fb864fe86eda398a14713cf38924cc537adc (diff)
Add helper function to directory writer to create a basic inode
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'include')
-rw-r--r--include/sqfs/dir.h59
1 files changed, 50 insertions, 9 deletions
diff --git a/include/sqfs/dir.h b/include/sqfs/dir.h
index ff53ce5..18950df 100644
--- a/include/sqfs/dir.h
+++ b/include/sqfs/dir.h
@@ -176,7 +176,7 @@ extern "C" {
/**
* @brief Create a directory writer.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param dm A pointer to a meta data writer that the generated directory
* entries should be written to.
@@ -189,7 +189,7 @@ SQFS_API sqfs_dir_writer_t *sqfs_dir_writer_create(sqfs_meta_writer_t *dm);
/**
* @brief Destroy a directory writer and free all its memory.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param writer A pointer to a directory writer object.
*/
@@ -199,7 +199,7 @@ SQFS_API void sqfs_dir_writer_destroy(sqfs_dir_writer_t *writer);
* @brief Begin writing a directory, i.e. reset and initialize all internal
* state neccessary.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param writer A pointer to a directory writer object.
*
@@ -210,7 +210,7 @@ SQFS_API int sqfs_dir_writer_begin(sqfs_dir_writer_t *writer);
/**
* @brief Add add a directory entry.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param writer A pointer to a directory writer object.
* @param name The name of the directory entry.
@@ -232,7 +232,7 @@ SQFS_API int sqfs_dir_writer_add_entry(sqfs_dir_writer_t *writer,
* @brief Finish writing a directory listing and write everything out to the
* meta data writer.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param writer A pointer to a directory writer object.
*
@@ -244,7 +244,7 @@ SQFS_API int sqfs_dir_writer_end(sqfs_dir_writer_t *writer);
* @brief Get the total, uncompressed size of the last written
* directory in bytes.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* Call this function after @ref sqfs_dir_writer_end to get the uncompressed
* size of the directory listing that is required for the directory inodes.
@@ -257,9 +257,24 @@ SQFS_API int sqfs_dir_writer_end(sqfs_dir_writer_t *writer);
SQFS_API size_t sqfs_dir_writer_get_size(const sqfs_dir_writer_t *writer);
/**
+ * @brief Get the numer of entries written to the last directory.
+ *
+ * @memberof sqfs_dir_writer_t
+ *
+ * Call this function after @ref sqfs_dir_writer_end to get the total
+ * number of entries written to the directory.
+ *
+ * @param writer A pointer to a directory writer object.
+ *
+ * @return The number of entries in the directory.
+ */
+SQFS_API
+size_t sqfs_dir_writer_get_entry_count(const sqfs_dir_writer_t *writer);
+
+/**
* @brief Get the location of the last written directory.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* Call this function after @ref sqfs_dir_writer_end to get the location of
* the directory listing that is required for the directory inodes.
@@ -275,7 +290,7 @@ sqfs_dir_writer_get_dir_reference(const sqfs_dir_writer_t *writer);
/**
* @brief Get the size of the index of the last written directory.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* Call this function after @ref sqfs_dir_writer_end to get the size of
* the directory index that is required for extended directory inodes.
@@ -290,7 +305,7 @@ SQFS_API size_t sqfs_dir_writer_get_index_size(const sqfs_dir_writer_t *writer);
* @brief Write the index of the index of the last written directory to
* a meta data writer after the extended directory inode.
*
- * @memberof sqfs_dir_writer_create
+ * @memberof sqfs_dir_writer_t
*
* @param writer A pointer to a directory writer object.
* @param im A pointer to a meta data writer to write the index to.
@@ -300,6 +315,32 @@ SQFS_API size_t sqfs_dir_writer_get_index_size(const sqfs_dir_writer_t *writer);
SQFS_API int sqfs_dir_writer_write_index(const sqfs_dir_writer_t *writer,
sqfs_meta_writer_t *im);
+/**
+ * @brief Helper function for creating an inode from the last directory.
+ *
+ * @memberof sqfs_dir_writer_t
+ *
+ * Call this function after @ref sqfs_dir_writer_end to create a bare bones
+ * inode structure for the directory. The directory information is filled in
+ * completely and the type is set, the rest of the basic information such as
+ * permission bits, owner and timestamp is left untouched.
+ *
+ * If the generated inode is an extended directory inode, you can use another
+ * convenience function called @ref sqfs_dir_writer_write_index to write the
+ * index meta data after writing the inode itself.
+ *
+ * @param writer A pointer to a directory writer object.
+ * @param hlinks The number of hard links pointing to the directory.
+ * @param xattr If set to something other than 0xFFFFFFFF, an extended
+ * directory inode is created with xattr index set.
+ * @param parent_ino The inode number of the parent directory.
+ *
+ * @return A generic inode or NULL on allocation failure.
+ */
+SQFS_API sqfs_inode_generic_t
+*sqfs_dir_writer_create_inode(const sqfs_dir_writer_t *writer, size_t hlinks,
+ uint32_t xattr, uint32_t parent_ino);
+
#ifdef __cplusplus
}
#endif