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findmnt: add --json 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2015-06-05 09:47:59 +02:00
parent 4a102a4871
commit 8449f2cb59
2 changed files with 18 additions and 4 deletions
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3
misc-utils/findmnt.8
View File

@ -89,6 +89,9 @@ Display help text and exit.
.BR \-i , " \-\-invert"
Invert the sense of matching.
.TP
.BR \-J , " \-\-json"
Use JSON output format.
.TP
.BR \-k , " \-\-kernel"
Search in
.IR /proc/self/mountinfo .

19
misc-utils/findmnt.c
View File

@ -1,7 +1,7 @@
/*
* findmnt(8)
*
* Copyright (C) 2010-2014 Red Hat, Inc. All rights reserved.
* Copyright (C) 2010-2015 Red Hat, Inc. All rights reserved.
* Written by Karel Zak <kzak@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
@ -69,7 +69,8 @@ enum {
FL_RAW = (1 << 21),
FL_NOHEADINGS = (1 << 22),
FL_EXPORT = (1 << 23),
FL_TREE = (1 << 24)
FL_TREE = (1 << 24),
FL_JSON = (1 << 25),
};
/* column IDs */
@ -593,7 +594,7 @@ static char *get_data(struct libmnt_fs *fs, int num)
if (!devno)
break;
if ((flags & FL_RAW) || (flags & FL_EXPORT))
if ((flags & FL_RAW) || (flags & FL_EXPORT) || (flags & FL_JSON))
xasprintf(&str, "%u:%u", major(devno), minor(devno));
else
xasprintf(&str, "%3u:%-3u", major(devno), minor(devno));
@ -1236,6 +1237,7 @@ static void __attribute__((__noreturn__)) usage(FILE *out)
fputs(_(" -F, --tab-file <path> alternative file for -s, -m or -k options\n"), out);
fputs(_(" -f, --first-only print the first found filesystem only\n"), out);
fputs(_(" -i, --invert invert the sense of matching\n"), out);
fputs(_(" -J, --json use JSON output format\n"), out);
fputs(_(" -l, --list use list format output\n"), out);
fputs(_(" -N, --task <tid> use alternative namespace (/proc/<tid>/mountinfo file)\n"), out);
fputs(_(" -n, --noheadings don't print column headings\n"), out);
@ -1291,6 +1293,7 @@ int main(int argc, char *argv[])
{ "fstab", 0, 0, 's' },
{ "help", 0, 0, 'h' },
{ "invert", 0, 0, 'i' },
{ "json", 0, 0, 'J' },
{ "kernel", 0, 0, 'k' },
{ "list", 0, 0, 'l' },
{ "mountpoint", 1, 0, 'M' },
@ -1320,6 +1323,7 @@ int main(int argc, char *argv[])
static const ul_excl_t excl[] = { /* rows and cols in in ASCII order */
{ 'C', 'c'}, /* [no]canonicalize */
{ 'C', 'e' }, /* nocanonicalize, evaluate */
{ 'J', 'P', 'r' }, /* json,pairs,raw */
{ 'M', 'T' }, /* mountpoint, target */
{ 'N','k','m','s' }, /* task,kernel,mtab,fstab */
{ 'P','l','r' }, /* pairs,list,raw */
@ -1337,7 +1341,7 @@ int main(int argc, char *argv[])
flags |= FL_TREE;
while ((c = getopt_long(argc, argv,
"AabCcDd:ehifF:o:O:p::PklmM:nN:rst:uvRS:T:Uw:V",
"AabCcDd:ehiJfF:o:O:p::PklmM:nN:rst:uvRS:T:Uw:V",
longopts, NULL)) != -1) {
err_exclusive_options(c, longopts, excl, excl_st);
@ -1380,6 +1384,9 @@ int main(int argc, char *argv[])
case 'i':
flags |= FL_INVERT;
break;
case 'J':
flags |= FL_JSON;
break;
case 'f':
flags |= FL_FIRSTONLY;
break;
@ -1577,9 +1584,13 @@ int main(int argc, char *argv[])
}
scols_table_enable_raw(table, !!(flags & FL_RAW));
scols_table_enable_export(table, !!(flags & FL_EXPORT));
scols_table_enable_json(table, !!(flags & FL_JSON));
scols_table_enable_ascii(table, !!(flags & FL_ASCII));
scols_table_enable_noheadings(table, !!(flags & FL_NOHEADINGS));
if (flags & FL_JSON)
scols_table_set_name(table, "filesystems");
for (i = 0; i < ncolumns; i++) {
int fl = get_column_flags(i);
int id = get_column_id(i);