diff options
Diffstat (limited to 'cpukit/libfs/src/imfs/imfs_load_tar.c')
| -rw-r--r-- | cpukit/libfs/src/imfs/imfs_load_tar.c | 57 |
1 files changed, 7 insertions, 50 deletions
diff --git a/cpukit/libfs/src/imfs/imfs_load_tar.c b/cpukit/libfs/src/imfs/imfs_load_tar.c index e51194fa8c..723699bdcc 100644 --- a/cpukit/libfs/src/imfs/imfs_load_tar.c +++ b/cpukit/libfs/src/imfs/imfs_load_tar.c @@ -1,3 +1,10 @@ +/** + * @file + * + * @brief RTEMS Load Tarfs + * @ingroup IMFS + */ + /* * COPYRIGHT (c) 1989-2010. * On-Line Applications Research Corporation (OAR). @@ -11,14 +18,6 @@ #include "config.h" #endif -/* - * This file implements the "mount" procedure for tar-based IMFS - * extensions. The TAR is not actually mounted under the IMFS. - * Directories from the TAR file are created as usual in the IMFS. - * File entries are created as IMFS_LINEAR_FILE nodes with their nods - * pointing to addresses in the TAR image. - */ - #include "imfs.h" #include <sys/stat.h> @@ -27,52 +26,10 @@ #include <rtems/untar.h> -/* - * TAR file format: - * - * Offset Length Contents - * 0 100 bytes File name ('\0' terminated, 99 maxmum length) - * 100 8 bytes File mode (in octal ascii) - * 108 8 bytes User ID (in octal ascii) - * 116 8 bytes Group ID (in octal ascii) - * 124 12 bytes File size (s) (in octal ascii) - * 136 12 bytes Modify time (in octal ascii) - * 148 8 bytes Header checksum (in octal ascii) - * 156 1 bytes Link flag - * 157 100 bytes Linkname ('\0' terminated, 99 maxmum length) - * 257 8 bytes Magic PAX ("ustar\0" + 2 bytes padding) - * 257 8 bytes Magic GNU tar ("ustar \0") - * 265 32 bytes User name ('\0' terminated, 31 maxmum length) - * 297 32 bytes Group name ('\0' terminated, 31 maxmum length) - * 329 8 bytes Major device ID (in octal ascii) - * 337 8 bytes Minor device ID (in octal ascii) - * 345 167 bytes Padding - * 512 (s+p)bytes File contents (s+p) := (((s) + 511) & ~511), - * round up to 512 bytes - * - * Checksum: - * int i, sum; - * char* header = tar_header_pointer; - * sum = 0; - * for(i = 0; i < 512; i++) - * sum += 0xFF & header[i]; - */ - #define MAX_NAME_FIELD_SIZE 99 #define MIN(a,b) ((a)>(b)?(b):(a)) -/* - * rtems_tarfs_load - * - * Here we create the mountpoint directory and load the tarfs at - * that node. Once the IMFS has been mounted, we work through the - * tar image and perform as follows: - * - For directories, simply call mkdir(). The IMFS creates nodes as - * needed. - * - For files, we make our own calls to IMFS eval_for_make and - * create_node. - */ int rtems_tarfs_load( const char *mountpoint, uint8_t *tar_image, |