fstrim: use new-style config/kbuild/applet snippets; trim help text

function                                             old     new   delta
packed_usage                                       29546   29520     -26

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

include/applets.src.h

@@ -167,7 +167,6 @@ IF_FSCK(APPLET(fsck, BB_DIR_SBIN, BB_SUID_DROP))
 //IF_E2FSCK(APPLET_ODDNAME(fsck.ext2, e2fsck, BB_DIR_SBIN, BB_SUID_DROP, fsck_ext2))
 //IF_E2FSCK(APPLET_ODDNAME(fsck.ext3, e2fsck, BB_DIR_SBIN, BB_SUID_DROP, fsck_ext3))
 IF_FSCK_MINIX(APPLET_ODDNAME(fsck.minix, fsck_minix, BB_DIR_SBIN, BB_SUID_DROP, fsck_minix))
-IF_FSTRIM(APPLET(fstrim, BB_DIR_SBIN, BB_SUID_DROP))
 IF_FSYNC(APPLET_NOFORK(fsync, fsync, BB_DIR_BIN, BB_SUID_DROP, fsync))
 IF_FTPD(APPLET(ftpd, BB_DIR_USR_SBIN, BB_SUID_DROP))
 IF_FTPGET(APPLET_ODDNAME(ftpget, ftpgetput, BB_DIR_USR_BIN, BB_SUID_DROP, ftpget))

util-linux/Config.src

@@ -246,13 +246,6 @@ config FSCK_MINIX
 	  check for and attempt to repair any corruption that occurs to a minix
 	  filesystem.
 
-config FSTRIM
-	bool "fstrim"
-	default y
-	select PLATFORM_LINUX
-	help
-	  Discard unused blocks on a mounted filesystem.
-
 config MKFS_EXT2
 	bool "mkfs_ext2"
 	default y

util-linux/Kbuild.src

@@ -18,7 +18,6 @@ lib-$(CONFIG_FINDFS)            += findfs.o
 lib-$(CONFIG_FLOCK)             += flock.o
 lib-$(CONFIG_FREERAMDISK)       += freeramdisk.o
 lib-$(CONFIG_FSCK_MINIX)        += fsck_minix.o
-lib-$(CONFIG_FSTRIM)            += fstrim.o
 lib-$(CONFIG_GETOPT)            += getopt.o
 lib-$(CONFIG_HEXDUMP)           += hexdump.o
 lib-$(CONFIG_HWCLOCK)           += hwclock.o

util-linux/fstrim.c

@@ -8,21 +8,31 @@
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
 
+//config:config FSTRIM
+//config:	bool "fstrim"
+//config:	default y
+//config:	select PLATFORM_LINUX
+//config:	help
+//config:	  Discard unused blocks on a mounted filesystem.
+
+//applet:IF_FSTRIM(APPLET(fstrim, BB_DIR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_FSTRIM) += fstrim.o
+
 //usage:#define fstrim_trivial_usage
-//usage:       "[Options] <mountpoint>"
+//usage:       "[OPTIONS] MOUNTPOINT"
 //usage:#define fstrim_full_usage "\n\n"
-//usage:       "Options:"
 //usage:	IF_LONG_OPTS(
-//usage:     "\n	-o,--offset=offset	offset in bytes to discard from"
+//usage:       "	-o,--offset=OFFSET	Offset in bytes to discard from"
-//usage:     "\n	-l,--length=length	length of bytes to discard from the offset"
+//usage:     "\n	-l,--length=LEN		Bytes to discard"
-//usage:     "\n	-m,--minimum=minimum	minimum extent length to discard"
+//usage:     "\n	-m,--minimum=MIN	Minimum extent length"
-//usage:     "\n	-v,--verbose		print number of discarded bytes"
+//usage:     "\n	-v,--verbose		Print number of discarded bytes"
 //usage:	)
 //usage:	IF_NOT_LONG_OPTS(
-//usage:     "\n	-o offset	offset in bytes to discard from"
+//usage:       "	-o OFFSET	Offset in bytes to discard from"
-//usage:     "\n	-l length	length of bytes to discard from the offset"
+//usage:     "\n	-l LEN		Bytes to discard"
-//usage:     "\n	-m minimum	minimum extent length to discard"
+//usage:     "\n	-m MIN		Minimum extent length"
-//usage:     "\n	-v,		print number of discarded bytes"
+//usage:     "\n	-v,		Print number of discarded bytes"
 //usage:	)
 
 #include "libbb.h"
@@ -94,7 +104,7 @@ int fstrim_main(int argc UNUSED_PARAM, char **argv)
 	if (opts & OPT_m)
 		range.minlen = xatoull_sfx(arg_m, fstrim_sfx);
 
-	mp = *(argv += optind);
+	mp = argv[optind];
 	if (find_block_device(mp)) {
 		fd = xopen_nonblocking(mp);
 		xioctl(fd, FITRIM, &range);
@@ -102,7 +112,7 @@ int fstrim_main(int argc UNUSED_PARAM, char **argv)
 			close(fd);
 
 		if (opts & OPT_v)
-			printf("%s: %llu bytes were trimmed\n", mp, range.len);
+			printf("%s: %llu bytes trimmed\n", mp, (unsigned long long)range.len);
 		return EXIT_SUCCESS;
 	}
 	return EXIT_FAILURE;