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btrfs-progs: introduce helper for parsing args without options 

All commands should support the "--" option separator. This is
transparently handled by getopt, but we don't use that everywhere.
Introduce a helper for commands that take no options (just the path).
The object file dependencies need to be adjusted a bit.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-01-14 10:30:35 +01:00
parent c26dc1ef33
commit a6cc8ea10a
3 changed files with 32 additions and 3 deletions
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6
Makefile.in
View File

@ -70,7 +70,7 @@ objects = ctree.o disk-io.o radix-tree.o extent-tree.o print-tree.o \
extent-cache.o extent_io.o volumes.o utils.o repair.o \
qgroup.o raid6.o free-space-cache.o list_sort.o props.o \
ulist.o qgroup-verify.o backref.o string-table.o task-utils.o \
inode.o file.o find-root.o free-space-tree.o
inode.o file.o find-root.o free-space-tree.o help.o
cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \
cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \
cmds-quota.o cmds-qgroup.o cmds-replace.o cmds-check.o \
@ -260,9 +260,9 @@ btrfs-%: $(objects) $(libs_static) btrfs-%.o
$(Q)$(CC) $(CFLAGS) -o $@ $(objects) $@.o $(libs_static) \
$(LDFLAGS) $(LIBS) $($(subst -,_,$@-libs))
btrfs: $(objects) btrfs.o help.o $(cmds_objects) $(libs_static)
btrfs: $(objects) btrfs.o $(cmds_objects) $(libs_static)
@echo " [LD] $@"
$(Q)$(CC) $(CFLAGS) -o btrfs btrfs.o help.o $(cmds_objects) \
$(Q)$(CC) $(CFLAGS) -o btrfs btrfs.o $(cmds_objects) \
$(objects) $(libs_static) $(LDFLAGS) $(LIBS)
btrfs.static: $(static_objects) btrfs.static.o help.static.o $(static_cmds_objects) $(static_libbtrfs_objects)

28
utils.c
View File

@ -37,6 +37,7 @@
#include <sys/vfs.h>
#include <sys/statfs.h>
#include <linux/magic.h>
#include <getopt.h>
#include "kerncompat.h"
#include "radix-tree.h"
@ -47,6 +48,7 @@
#include "utils.h"
#include "volumes.h"
#include "ioctl.h"
#include "commands.h"
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
@ -3119,3 +3121,29 @@ int string_is_numerical(const char *str)
return 0;
return 1;
}
/*
* Preprocess @argv with getopt_long to reorder options and consume the "--"
* option separator.
* Unknown short and long options are reported, optionally the @usage is printed
* before exit.
*/
void clean_args_no_options(int argc, char *argv[], const char * const *usagestr)
{
static const struct option long_options[] = {
{NULL, 0, NULL, 0}
};
while (1) {
int c = getopt_long(argc, argv, "", long_options, NULL);
if (c < 0)
break;
switch (c) {
default:
if (usagestr)
usage(usagestr);
}
}
}

1
utils.h
View File

@ -274,6 +274,7 @@ const char *get_argv0_buf(void);
"-t|--tbytes show sizes in TiB, or TB with --si"
unsigned int get_unit_mode_from_arg(int *argc, char *argv[], int df_mode);
void clean_args_no_options(int argc, char *argv[], const char * const *usage);
int string_is_numerical(const char *str);
__attribute__ ((format (printf, 1, 2)))