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cmd_fs_usage: Implement --help

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-06-10 20:59:22 -04:00
parent f43c9702e0
commit 7a66cf70c5
3 changed files with 25 additions and 14 deletions
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6
bcachefs.c
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@ -113,8 +113,10 @@ static int fs_cmds(int argc, char *argv[])
{ {
char *cmd = pop_cmd(&argc, argv); char *cmd = pop_cmd(&argc, argv);
if (argc < 1) if (argc < 1) {
return fs_usage(); usage();
exit(EXIT_FAILURE);
}
if (!strcmp(cmd, "usage")) if (!strcmp(cmd, "usage"))
return cmd_fs_usage(argc, argv); return cmd_fs_usage(argc, argv);

32
cmd_fs.c
View File

@ -1,4 +1,4 @@
#include <getopt.h>
#include <stdio.h> #include <stdio.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
@ -275,30 +275,40 @@ static void fs_usage_to_text(struct printbuf *out, const char *path)
bcache_fs_close(fs); bcache_fs_close(fs);
} }
int fs_usage(void) static void fs_usage_usage(void)
{ {
puts("bcachefs fs - manage a running filesystem\n" puts("bcachefs fs usage - display detailed filesystem usage\n"
"Usage: bcachefs fs <CMD> [OPTION]... path\n" "Usage: bcachefs fs usage [OPTION]... <mountpoint>\n"
"\n" "\n"
"Commands:\n" "Options:\n"
" usage show disk usage\n" " -h, --human-readable Human readable units\n"
"\n" " --help Display this help and exit\n"
"Report bugs to <linux-bcachefs@vger.kernel.org>"); "Report bugs to <linux-bcachefs@vger.kernel.org>");
return 0;
} }
int cmd_fs_usage(int argc, char *argv[]) int cmd_fs_usage(int argc, char *argv[])
{ {
static const struct option longopts[] = {
{ "help", no_argument, NULL, 'H' },
{ NULL }
};
bool human_readable = false; bool human_readable = false;
struct printbuf buf = PRINTBUF; struct printbuf buf = PRINTBUF;
char *fs; char *fs;
int opt; int opt;
while ((opt = getopt(argc, argv, "h")) != -1) while ((opt = getopt_long(argc, argv, "h",
longopts, NULL)) != -1)
switch (opt) { switch (opt) {
case 'h': case 'h':
human_readable = true; human_readable = true;
break; break;
case 'H':
fs_usage_usage();
exit(EXIT_SUCCESS);
default:
fs_usage_usage();
exit(EXIT_FAILURE);
} }
args_shift(optind); args_shift(optind);

1
cmds.h
View File

@ -20,7 +20,6 @@ int cmd_run(int argc, char *argv[]);
int cmd_stop(int argc, char *argv[]); int cmd_stop(int argc, char *argv[]);
#endif #endif
int fs_usage(void);
int cmd_fs_usage(int argc, char *argv[]); int cmd_fs_usage(int argc, char *argv[]);
int device_usage(void); int device_usage(void);