tar: add support for -o as synonym to --no-same-owner. +5 bytes

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/archival/tar.c b/archival/tar.c
index 3c0ceb7..450402d 100644 (file)
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -727,7 +727,7 @@ static void handle_SIGCHLD(int status)
 #endif
 
 enum {
-       OPTBIT_KEEP_OLD = 7,
+       OPTBIT_KEEP_OLD = 8,
        IF_FEATURE_TAR_CREATE(   OPTBIT_CREATE      ,)
        IF_FEATURE_TAR_CREATE(   OPTBIT_DEREFERENCE ,)
        IF_FEATURE_SEAMLESS_BZ2( OPTBIT_BZIP2       ,)
@@ -735,7 +735,7 @@ enum {
        IF_FEATURE_TAR_FROM(     OPTBIT_INCLUDE_FROM,)
        IF_FEATURE_TAR_FROM(     OPTBIT_EXCLUDE_FROM,)
        IF_FEATURE_SEAMLESS_GZ(  OPTBIT_GZIP        ,)
-       IF_FEATURE_SEAMLESS_Z(   OPTBIT_COMPRESS    ,) /* 15th bit */
+       IF_FEATURE_SEAMLESS_Z(   OPTBIT_COMPRESS    ,) // 16th bit
        OPTBIT_NUMERIC_OWNER,
        OPTBIT_NOPRESERVE_OWNER,
        OPTBIT_NOPRESERVE_PERM,
@@ -744,9 +744,10 @@ enum {
        OPT_BASEDIR      = 1 << 2, // C
        OPT_TARNAME      = 1 << 3, // f
        OPT_2STDOUT      = 1 << 4, // O
-       OPT_P            = 1 << 5, // p
-       OPT_VERBOSE      = 1 << 6, // v
-       OPT_KEEP_OLD     = 1 << 7, // k
+       OPT_NOPRESERVE_OWNER = 1 << 5, // no-same-owner
+       OPT_P            = 1 << 6, // p
+       OPT_VERBOSE      = 1 << 7, // v
+       OPT_KEEP_OLD     = 1 << 8, // k
        OPT_CREATE       = IF_FEATURE_TAR_CREATE(   (1 << OPTBIT_CREATE      )) + 0, // c
        OPT_DEREFERENCE  = IF_FEATURE_TAR_CREATE(   (1 << OPTBIT_DEREFERENCE )) + 0, // h
        OPT_BZIP2        = IF_FEATURE_SEAMLESS_BZ2( (1 << OPTBIT_BZIP2       )) + 0, // j
@@ -756,7 +757,6 @@ enum {
        OPT_GZIP         = IF_FEATURE_SEAMLESS_GZ(  (1 << OPTBIT_GZIP        )) + 0, // z
        OPT_COMPRESS     = IF_FEATURE_SEAMLESS_Z(   (1 << OPTBIT_COMPRESS    )) + 0, // Z
        OPT_NUMERIC_OWNER = 1 << OPTBIT_NUMERIC_OWNER,
-       OPT_NOPRESERVE_OWNER = 1 << OPTBIT_NOPRESERVE_OWNER , // no-same-owner
        OPT_NOPRESERVE_PERM = 1 << OPTBIT_NOPRESERVE_PERM, // no-same-permissions
 };
 #if ENABLE_FEATURE_TAR_LONG_OPTIONS
@@ -766,6 +766,10 @@ static const char tar_longopts[] ALIGN1 =
        "directory\0"           Required_argument "C"
        "file\0"                Required_argument "f"
        "to-stdout\0"           No_argument       "O"
+       /* do not restore owner */
+       /* Note: GNU tar handles 'o' as no-same-owner only on extract,
+        * on create, 'o' is --old-archive. We do not support --old-archive. */
+       "no-same-owner\0"       No_argument       "o"
        "same-permissions\0"    No_argument       "p"
        "verbose\0"             No_argument       "v"
        "keep-old\0"            No_argument       "k"
@@ -790,9 +794,7 @@ static const char tar_longopts[] ALIGN1 =
        "compress\0"            No_argument       "Z"
 # endif
        /* use numeric uid/gid from tar header, not textual */
-       "numeric-owner\0"       No_argument       "\xfc"
-       /* do not restore owner */
-       "no-same-owner\0"       No_argument       "\xfd"
+       "numeric-owner\0"       No_argument       "\xfd"
        /* do not restore mode */
        "no-same-permissions\0" No_argument       "\xfe"
        /* --exclude takes next bit position in option mask, */
@@ -869,7 +871,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
        }
 #endif
        opt = getopt32(argv,
-               "txC:f:Opvk"
+               "txC:f:Oopvk"
                IF_FEATURE_TAR_CREATE(   "ch"  )
                IF_FEATURE_SEAMLESS_BZ2( "j"   )
                IF_FEATURE_SEAMLESS_LZMA("a"   )