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cp: optional --reflink support

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function                                             old     new   delta
cp_main                                              428     512     +84
copy_file                                           1676    1742     +66

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2018-07-13 20:30:02 +02:00
parent 253f555f01
commit 79fb6ac7a5
3 changed files with 46 additions and 0 deletions
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24
coreutils/cp.c
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@@ -24,6 +24,11 @@
//config: help
//config: Enable long options.
//config: Also add support for --parents option.
//config:
//config:config FEATURE_CP_REFLINK
//config: bool "Enable --reflink[=auto]
//config: default y
//config: depends on FEATURE_CP_LONG_OPTIONS
//applet:IF_CP(APPLET_NOEXEC(cp, cp, BB_DIR_BIN, BB_SUID_DROP, cp))
/* NOEXEC despite cases when it can be a "runner" (cp -r LARGE_DIR NEW_DIR) */
@@ -72,10 +77,14 @@ int cp_main(int argc, char **argv)
#if ENABLE_FEATURE_CP_LONG_OPTIONS
/*OPT_rmdest = FILEUTILS_RMDEST = 1 << FILEUTILS_CP_OPTNUM */
OPT_parents = 1 << (FILEUTILS_CP_OPTNUM+1),
OPT_reflink = 1 << (FILEUTILS_CP_OPTNUM+2),
#endif
};
#if ENABLE_FEATURE_CP_LONG_OPTIONS
# if ENABLE_FEATURE_CP_REFLINK
char *reflink = NULL;
# endif
flags = getopt32long(argv, "^"
FILEUTILS_CP_OPTSTR
"\0"
@@ -99,7 +108,22 @@ int cp_main(int argc, char **argv)
"update\0" No_argument "u"
"remove-destination\0" No_argument "\xff"
"parents\0" No_argument "\xfe"
# if ENABLE_FEATURE_CP_REFLINK
"reflink\0" Optional_argument "\xfd"
, &reflink
# endif
);
# if ENABLE_FEATURE_CP_REFLINK
BUILD_BUG_ON(OPT_reflink != FILEUTILS_REFLINK);
if (flags & FILEUTILS_REFLINK) {
if (!reflink)
flags |= FILEUTILS_REFLINK_ALWAYS;
else if (strcmp(reflink, "always") == 0)
flags |= FILEUTILS_REFLINK_ALWAYS;
else if (strcmp(reflink, "auto") != 0)
bb_show_usage();
}
# endif
#else
flags = getopt32(argv, "^"
FILEUTILS_CP_OPTSTR