Some commands could be run in a dry-run mode, i.e. not doing any
write/change actions, only printing the steps and ignoring errors.
There are two possibilities where to put the option:
- as a global one: btrfs --dry-run subvolume delete /path
- local option: btrfs subvolume delete --dry-run /path
As we have several global options already, let's put it there, dry-run
should not be very common so the slight inconvenience of writing the
option out of order of command arguments should be acceptable.
Issue: #629
Signed-off-by: David Sterba <dsterba@suse.com>
./btrfs --param key=value command ...
./btrfs --param key command ...
To pass various tuning data for testing and debugging, undocumented
for regular users.
To add support add reading of the parameter value after option parsing
bconf_param_value("key") and convert to what you need.
Signed-off-by: David Sterba <dsterba@suse.com>
[BUG]
Currently cli/009 test case failed with different exit number:
====== RUN CHECK /home/adam/btrfs-progs/btrfstune --help
usage: btrfstune [options] device
[...]
failed: /home/adam/btrfs-progs/btrfstune --help
test failed for case 009-btrfstune
[CAUSE]
In tune/main.c, we have the following call on usage():
static void print_usage(int ret)
{
usage(&tune_cmd);
exit(ret);
}
However usage() itself would always call exit(1):
void usage(const struct cmd_struct *cmd)
{
usage_command_usagestr(cmd->usagestr, NULL, 0, true, true);
exit(1);
}
This makes prevents any caller of usage() to modify its exit number.
[FIX]
Add a new argument @error for print_usage(), so we can properly return 0
for -h/--help usage.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
To make option formatting a bit easier so the spacing is unified add
macros and formatting helpers.
Usage in the help text:
OPTLINE("-o value", "description")
Internally the option and description are delimiters by chars that are
not part of normal text, the formatter separates that and uses fixed
with for output. The description text can be of any length, multi-line
text should still end up as one token (i.e. newline without ',' between).
Signed-off-by: David Sterba <dsterba@suse.com>
The tool IWYU (include what you use) suggests to remove and add some
includes. This is only partial to avoid accidental build breakage, the
includes are entangled and will have to be cleaned in the future again.
Signed-off-by: David Sterba <dsterba@suse.com>
Add constant for initial value to avoid unexpected clashes with user
defined getopt values and shift the common size getopt values.
Signed-off-by: David Sterba <dsterba@suse.com>
Add --verbose and --quiet command options to show verbose or no output
from the subcommands. By introducing global a bconf::verbose memeber to
propagate the same down to the subcommand.
Further the added helper function pr_verbose() helps to logs the verbose
messages, based on the state of the %bconf::verbose. And further HELPINFO_
defines are provided for the usage.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
As of now the define HELPINFO_INSERT_GLOBALS if used as in the example
as below (as of now its not been used anywhere) will print the help
texts as shown below
$ ./btrfs fi show --help
<snip>
Global options:
--format TYPE where TYPE is: text
So in preparation to add --verbose and --quiet global options, and
apparently --format is not being used yet, this patch splits the global
options into two defines.
"Global options:"
So that the currently added global options --verbose and --quiet can use
the define HELPINFO_INSERT_GLOBALS header as shown below.
$ ./btrfs fi show --help
<snip>
Global options:
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Global options should be printed right after the command options, but
there could be text following the options. Add a marker that will allow
to order the options before that text.
Signed-off-by: David Sterba <dsterba@suse.com>
This adds a global --format option to request extended output formats
from each command.
We currently only support text mode. Command help reports what
output formats are available for each command. Global help reports
what valid formats are.
If an invalid format is requested, an error is reported and lists the
valid formats.
Each command sets a bitmask that describes which formats it is capable
of outputting. If a globally valid format is requested of a command
that doesn't support it, an error is reported and command usage dumped.
Commands don't need to specify that they support text output. All
commands are required to output text.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
[ use global config instead of passing cmd_context ]
Signed-off-by: David Sterba <dsterba@suse.com>
