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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2016-05-27 00:46:38 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2016-05-27 00:46:38 +0200 |
| commit | 877dedb8251be47b3614a371434081ae9b7b358b (patch) | |
| tree | 70fbac15f652ff7ce9aaada1252b4b6a0a846dad /libbb/copy_file.c | |
| parent | 852e8dd734662d80aa82be802b066130af85b261 (diff) | |
| download | busybox-877dedb8251be47b3614a371434081ae9b7b358b.tar.gz | |
cp: add -u/--update and --remove-destination
Based on the patch by wdlkmpx@gmail.com
function old new delta
copy_file 1546 1644 +98
add_partition 1270 1362 +92
ask_and_unlink 95 133 +38
do_iproute 132 157 +25
decode_one_format 710 715 +5
cp_main 369 374 +5
ubirename_main 198 202 +4
read_package_field 232 230 -2
bb_make_directory 421 412 -9
packed_usage 30505 30476 -29
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 7/3 up/down: 267/-40) Total: 227 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/copy_file.c')
| -rw-r--r-- | libbb/copy_file.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/libbb/copy_file.c b/libbb/copy_file.c index a4be875d2..23bcf2e82 100644 --- a/libbb/copy_file.c +++ b/libbb/copy_file.c @@ -64,6 +64,11 @@ static int ask_and_unlink(const char *dest, int flags) bb_perror_msg("can't create '%s'", dest); return -1; /* error */ } +#if ENABLE_FEATURE_CP_LONG_OPTIONS + if (flags & FILEUTILS_RMDEST) + if (flags & FILEUTILS_VERBOSE) + printf("removed '%s'\n", dest); +#endif return 1; /* ok (to try again) */ } @@ -210,6 +215,22 @@ int FAST_FUNC copy_file(const char *source, const char *dest, int flags) goto preserve_mode_ugid_time; } + if (dest_exists) { + if (flags & FILEUTILS_UPDATE) { + if (source_stat.st_mtime <= dest_stat.st_mtime) { + return 0; /* source file must be newer */ + } + } +#if ENABLE_FEATURE_CP_LONG_OPTIONS + if (flags & FILEUTILS_RMDEST) { + ovr = ask_and_unlink(dest, flags); + if (ovr <= 0) + return ovr; + dest_exists = 0; + } +#endif + } + if (flags & (FILEUTILS_MAKE_SOFTLINK|FILEUTILS_MAKE_HARDLINK)) { int (*lf)(const char *oldpath, const char *newpath); make_links: |