diff options
| -rw-r--r-- | include/tpax/tpax.h | 1 | ||||
| -rw-r--r-- | project/common.mk | 1 | ||||
| -rw-r--r-- | src/helper/tpax_stat_compare.c | 41 |
3 files changed, 43 insertions, 0 deletions
diff --git a/include/tpax/tpax.h b/include/tpax/tpax.h index 5281ea1..c39f721 100644 --- a/include/tpax/tpax.h +++ b/include/tpax/tpax.h @@ -148,6 +148,7 @@ tpax_api int tpax_set_driver_fdctx (struct tpax_driver_ctx *, const struct /* helper api */ tpax_api int tpax_path_copy (char *, const char *, size_t, uint32_t, size_t *); +tpax_api int tpax_stat_compare (const struct stat *, const struct stat *); /* utility api */ tpax_api int tpax_main (char **, char **, diff --git a/project/common.mk b/project/common.mk index ca6bc81..14d6ec8 100644 --- a/project/common.mk +++ b/project/common.mk @@ -3,6 +3,7 @@ API_SRCS = \ src/driver/tpax_driver_ctx.c \ src/driver/tpax_unit_ctx.c \ src/helper/tpax_path_copy.c \ + src/helper/tpax_stat_compare.c \ src/logic/tpax_init_ustar_header.c \ src/output/tpax_output_error.c \ src/skin/tpax_skin_default.c \ diff --git a/src/helper/tpax_stat_compare.c b/src/helper/tpax_stat_compare.c new file mode 100644 index 0000000..afbe2f4 --- /dev/null +++ b/src/helper/tpax_stat_compare.c @@ -0,0 +1,41 @@ +/******************************************************/ +/* tpax: a topological pax implementation */ +/* Copyright (C) 2020 Z. Gilboa */ +/* Released under GPLv2 and GPLv3; see COPYING.TPAX. */ +/******************************************************/ + +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <sys/stat.h> + +#include <tpax/tpax.h> +#include "tpax_driver_impl.h" + +#define TPAX_STAT_COMPARE(member) \ + if (src -> member - dst -> member) \ + return (src -> member > dst -> member) \ + ? (1) : (-1) + +int tpax_stat_compare( + const struct stat * src, + const struct stat * dst) +{ + TPAX_STAT_COMPARE(st_dev); + TPAX_STAT_COMPARE(st_ino); + + TPAX_STAT_COMPARE(st_mode); + TPAX_STAT_COMPARE(st_uid); + TPAX_STAT_COMPARE(st_gid); + + TPAX_STAT_COMPARE(st_rdev); + TPAX_STAT_COMPARE(st_size); + TPAX_STAT_COMPARE(st_blksize); + TPAX_STAT_COMPARE(st_blocks); + + TPAX_STAT_COMPARE(st_mtim.tv_sec); + TPAX_STAT_COMPARE(st_mtim.tv_nsec); + + return 0; +} |