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authorDenys Vlasenko2018-07-13 20:30:02 +0200
committerDenys Vlasenko2018-07-13 20:30:02 +0200
commit79fb6ac7a5acc4178b66314c573aeada1d387ed9 (patch)
tree421fd899e9dfcc5533b3107af6eba3de0f153044 /coreutils
parent253f555f01fa380083a7436a569397a4e7f997b0 (diff)
downloadbusybox-79fb6ac7a5acc4178b66314c573aeada1d387ed9.zip
busybox-79fb6ac7a5acc4178b66314c573aeada1d387ed9.tar.gz
cp: optional --reflink support
function old new delta cp_main 428 512 +84 copy_file 1676 1742 +66 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'coreutils')
-rw-r--r--coreutils/cp.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/coreutils/cp.c b/coreutils/cp.c
index 455bffb..b623aaf 100644
--- a/coreutils/cp.c
+++ b/coreutils/cp.c
@@ -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