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bug#55937: [PATCH] touch: create parent directories if needed
From: |
Alan Rosenthal |
Subject: |
bug#55937: [PATCH] touch: create parent directories if needed |
Date: |
Sun, 12 Jun 2022 22:05:40 -0400 |
`touch a/b/c/d/e` will now be the same as running `mkdir -p a/b/c/d &&
touch a/b/c/d/e`.
Added an option --no-create-dirs to not create any directories.
---
src/touch.c | 39 ++++++++++++++++++++++++++++++++++++++-
1 file changed, 38 insertions(+), 1 deletion(-)
diff --git a/src/touch.c b/src/touch.c
index 21c247d0b..9034e8797 100644
--- a/src/touch.c
+++ b/src/touch.c
@@ -28,10 +28,12 @@
#include "die.h"
#include "error.h"
#include "fd-reopen.h"
+#include "mkancesdirs.h"
#include "parse-datetime.h"
#include "posixtm.h"
#include "posixver.h"
#include "quote.h"
+#include "savewd.h"
#include "stat-time.h"
#include "utimens.h"
@@ -55,6 +57,9 @@ static int change_times;
/* (-c) If true, don't create if not already there. */
static bool no_create;
+/* (-c) If true, don't create directories if not already there. */
+static bool no_create_dirs;
+
/* (-r) If true, use times from a reference file. */
static bool use_ref;
@@ -88,6 +93,7 @@ static struct option const longopts[] =
{"date", required_argument, NULL, 'd'},
{"reference", required_argument, NULL, 'r'},
{"no-dereference", no_argument, NULL, 'h'},
+ {"no_create_dirs", no_argument, NULL, 'i'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
@@ -116,6 +122,14 @@ get_reldate (struct timespec *result,
die (EXIT_FAILURE, 0, _("invalid date format %s"), quote (flex_date));
}
+/* Create directory, called by mkancesdirs(). */
+
+static int
+make_dir(char const * file, char const * component, void * arg)
+{
+ return mkdir(component, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
+}
+
/* Update the time of file FILE according to the options given.
Return true if successful. */
@@ -130,6 +144,25 @@ touch (char const *file)
fd = STDOUT_FILENO;
else if (! (no_create || no_dereference))
{
+ if (! no_create_dirs)
+ {
+ struct savewd wd;
+ savewd_init(&wd);
+ ptrdiff_t ret = mkancesdirs((char*) file, &wd, make_dir, NULL);
+ if (ret == -1)
+ {
+ error (0, open_errno, _("cannot mkdir %s"), quoteaf (file));
+ return false;
+ }
+ int r = savewd_restore(&wd, 0);
+ if (r < 0)
+ {
+ error (0, open_errno, _("cannot mkdir %s"), quoteaf (file));
+ return false;
+ }
+ savewd_finish(&wd);
+ }
+
/* Try to open FILE, creating it if necessary. */
fd = fd_reopen (STDIN_FILENO, file,
O_WRONLY | O_CREAT | O_NONBLOCK | O_NOCTTY,
MODE_RW_UGO);
@@ -276,7 +309,7 @@ main (int argc, char **argv)
change_times = 0;
no_create = use_ref = false;
- while ((c = getopt_long (argc, argv, "acd:fhmr:t:", longopts, NULL)) !=
-1)
+ while ((c = getopt_long (argc, argv, "acd:fhimr:t:", longopts, NULL)) !=
-1)
{
switch (c)
{
@@ -299,6 +332,10 @@ main (int argc, char **argv)
no_dereference = true;
break;
+ case 'i':
+ no_create_dirs = true;
+ break;
+
case 'm':
change_times |= CH_MTIME;
break;
--
2.20.1