12:27 a.m.
Tweak the error message "e2fsck -f" and "e2fsck -fy" to
"e2fsck-f" and "e2fsck-fy".
Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com>
---
daemon/ext2.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/daemon/ext2.c b/daemon/ext2.c
index 79fd354..9fe938e 100644
--- a/daemon/ext2.c
+++ b/daemon/ext2.c
@@ -277,9 +277,25 @@ do_resize2fs_M (const char *device)
if (e2prog (prog) == -1)
return -1;
- r = command (NULL, &err, prog, "-M" , device, NULL);
+ r = command (NULL, &err, prog, "-M", device, NULL);
if (r == -1) {
- reply_with_error ("%s", err);
+ int i = 0;
+ int len = strlen (err);
+ char *err_wrap = malloc (len + 1);
+ if (!err_wrap)
+ goto err_out;
+ char *p = strstr (err, "e2fsck -f");
+ if (p) {
+ strncpy (err_wrap, err, p - err);
+ err_wrap[p - err] = '\0';
+ sprintf(err_wrap + (p - err), "%s%s", "e2fsck-f", p + 9);
+ reply_with_error ("%s", err_wrap);
+ } else {
+ reply_with_error ("%s", err);
+ }
+
+ free (err_wrap);
+err_out:
free (err);
return -1;
}
--
1.7.8
12:27 a.m.
New subject: [PATCH 2/2] NEW API: new api e2fsck-fy for resize2fs
Add a new api e2fsck-fy for resize2fs.
Sometimes e2fsck-f is not enough.
If resiz2fs return the message says: " Please use e2fsck-fy first",
we just haven't such a command, it's so awkward.
Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com>
---
daemon/ext2.c | 21 +++++++++++++++++++++
generator/generator_actions.ml | 15 +++++++++++++++
src/MAX_PROC_NR | 2 +-
3 files changed, 37 insertions(+), 1 deletions(-)
diff --git a/daemon/ext2.c b/daemon/ext2.c
index 9fe938e..4f3710d 100644
--- a/daemon/ext2.c
+++ b/daemon/ext2.c
@@ -333,6 +333,27 @@ do_e2fsck_f (const char *device)
}
int
+do_e2fsck_fy (const char *device)
+{
+ char *err;
+ int r;
+
+ char prog[] = "e2fsck";
+ if (e2prog (prog) == -1)
+ return -1;
+
+ r = commandr (NULL, &err, prog, "-f", "-y", device, NULL);
+ if (r == -1 || r >= 2) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+int
do_mke2journal (int blocksize, const char *device)
{
char *err;
diff --git a/generator/generator_actions.ml b/generator/generator_actions.ml
index fb82bb6..fc3193a 100644
--- a/generator/generator_actions.ml
+++ b/generator/generator_actions.ml
@@ -3454,6 +3454,7 @@ are activated or deactivated.");
["umount"; "/"];
["lvresize"; "/dev/VG/LV"; "20"];
["e2fsck_f"; "/dev/VG/LV"];
+ ["e2fsck_fy"; "/dev/VG/LV"];
["resize2fs"; "/dev/VG/LV"];
["mount_options"; ""; "/dev/VG/LV"; "/"];
["cat"; "/new"]], "test content");
@@ -6597,6 +6598,20 @@ The usage of this device, for example C<filesystem> or
C<raid>.
=back");
+ ("e2fsck_fy", (RErr, [Device "device"], []), 304, [],
+ [], (* lvresize tests this *)
+ "check an ext2/ext3 filesystem",
+ "\
+This force to check the filesystem even it appears to be clean,
+and assume an answer of 'yes' to all questions, allows e2fsck
+to be used no-interactively.
+
+This command is only needed when C<guestfs_e2fsck_f> even can't do
+things for C<guestfs_resize2fs> (q.v.). Normally you should use
+C<guestfs_fsck>.
+
+When using this, you should know clearly what are you doing now.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
diff --git a/src/MAX_PROC_NR b/src/MAX_PROC_NR
index 8160622..873b744 100644
--- a/src/MAX_PROC_NR
+++ b/src/MAX_PROC_NR
@@ -1 +1 @@
-303
+304
--
1.7.8
4:12 a.m.
New subject: [PATCH 2/2] NEW API: new api e2fsck-fy for resize2fs
On Fri, Jan 13, 2012 at 02:27:50PM +0800, Wanlong Gao wrote:
Add a new api e2fsck-fy for resize2fs.
Sometimes e2fsck-f is not enough.
If resiz2fs return the message says: " Please use e2fsck-fy first",
we just haven't such a command, it's so awkward.
Since we are going to rewrite the error message, can we change it to
say "use e2fsck-f first"?
It's not really clear to me what the difference is between
'e2fsck -p -f' (which is what we use for the 'e2fsck-f' command) and
'e2fsck -y -f'.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://et.redhat.com/~rjones/virt-top
5:09 a.m.
New subject: [PATCH 2/2] NEW API: new api e2fsck-fy for resize2fs
On 01/13/2012 06:12 PM, Richard W.M. Jones wrote:
On Fri, Jan 13, 2012 at 02:27:50PM +0800, Wanlong Gao wrote:
> Add a new api e2fsck-fy for resize2fs.
> Sometimes e2fsck-f is not enough.
>
> If resiz2fs return the message says: " Please use e2fsck-fy first",
> we just haven't such a command, it's so awkward.
Since we are going to rewrite the error message, can we change it to
say "use e2fsck-f first"?
Yes, normally it will say "use e2fsck-f", but after use e2fsck-f, then
resize2fs still fails, it'll say "use e2fsck-fy".
It's not really clear to me what the difference is between
'e2fsck -p -f' (which is what we use for the 'e2fsck-f' command) and
'e2fsck -y -f'.
"-p" : correct the errors which is not dangerous, but say "n" to some
"may be dangerous"
ones.
"-y" : always say "y" to try to fix the errors whether it is safe or
not.
so, when using "-y", you should know what are you doing now.
Thanks
-Wanlong Gao
Rich.
7:08 a.m.
New subject: [PATCH 2/2] NEW API: new api e2fsck-fy for resize2fs
On Fri, Jan 13, 2012 at 07:09:38PM +0800, Wanlong Gao wrote:
On 01/13/2012 06:12 PM, Richard W.M. Jones wrote:
> On Fri, Jan 13, 2012 at 02:27:50PM +0800, Wanlong Gao wrote:
>> Add a new api e2fsck-fy for resize2fs.
>> Sometimes e2fsck-f is not enough.
>>
>> If resiz2fs return the message says: " Please use e2fsck-fy first",
>> we just haven't such a command, it's so awkward.
>
> Since we are going to rewrite the error message, can we change it to
> say "use e2fsck-f first"?
Yes, normally it will say "use e2fsck-f", but after use e2fsck-f, then
resize2fs still fails, it'll say "use e2fsck-fy".
>
> It's not really clear to me what the difference is between
> 'e2fsck -p -f' (which is what we use for the 'e2fsck-f' command)
and
> 'e2fsck -y -f'.
"-p" : correct the errors which is not dangerous, but say "n" to some
"may be dangerous"
ones.
"-y" : always say "y" to try to fix the errors whether it is safe or
not.
so, when using "-y", you should know what are you doing now.
I see.
How about designing a new API called "e2fsck" which has optional
arguments:
OBool "correct" (* same as "-p" *);
OBool "forceall" (* same as "-y" *)
The advantage of the new API is that we can extend it in future.
That would change the first patch: Instead of rewriting the error
message, just replace it, eg something like this:
if (strstr (err, "e2fsck -f")) {
free (err);
reply_with_error ("you need to run e2fsck with the correct and/or forceall
options first");
} else {
reply_with_error ("%s", err);
}
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
New in Fedora 11: Fedora Windows cross-compiler. Compile Windows
programs, test, and build Windows installers. Over 70 libraries supprt'd
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7:14 a.m.
New subject: [PATCH 2/2] NEW API: new api e2fsck-fy for resize2fs
On 01/13/2012 09:08 PM, Richard W.M. Jones wrote:
On Fri, Jan 13, 2012 at 07:09:38PM +0800, Wanlong Gao wrote:
> On 01/13/2012 06:12 PM, Richard W.M. Jones wrote:
>
>> On Fri, Jan 13, 2012 at 02:27:50PM +0800, Wanlong Gao wrote:
>>> Add a new api e2fsck-fy for resize2fs.
>>> Sometimes e2fsck-f is not enough.
>>>
>>> If resiz2fs return the message says: " Please use e2fsck-fy
first",
>>> we just haven't such a command, it's so awkward.
>>
>> Since we are going to rewrite the error message, can we change it to
>> say "use e2fsck-f first"?
>
>
> Yes, normally it will say "use e2fsck-f", but after use e2fsck-f, then
> resize2fs still fails, it'll say "use e2fsck-fy".
>
>>
>> It's not really clear to me what the difference is between
>> 'e2fsck -p -f' (which is what we use for the 'e2fsck-f' command)
and
>> 'e2fsck -y -f'.
>
>
> "-p" : correct the errors which is not dangerous, but say "n" to
some "may be dangerous"
> ones.
> "-y" : always say "y" to try to fix the errors whether it is safe
or not.
> so, when using "-y", you should know what are you doing now.
I see.
How about designing a new API called "e2fsck" which has optional
arguments:
OBool "correct" (* same as "-p" *);
OBool "forceall" (* same as "-y" *)
The advantage of the new API is that we can extend it in future.
That would change the first patch: Instead of rewriting the error
message, just replace it, eg something like this:
if (strstr (err, "e2fsck -f")) {
free (err);
reply_with_error ("you need to run e2fsck with the correct and/or forceall
options first");
} else {
reply_with_error ("%s", err);
}
yeah, it's better, will do like this.
Thanks Rich
-Wanlong Gao
Rich.
4:08 a.m.
On Fri, Jan 13, 2012 at 02:27:49PM +0800, Wanlong Gao wrote:
Tweak the error message "e2fsck -f" and "e2fsck
-fy" to
"e2fsck-f" and "e2fsck-fy".
Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com>
---
daemon/ext2.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/daemon/ext2.c b/daemon/ext2.c
index 79fd354..9fe938e 100644
--- a/daemon/ext2.c
+++ b/daemon/ext2.c
@@ -277,9 +277,25 @@ do_resize2fs_M (const char *device)
if (e2prog (prog) == -1)
return -1;
- r = command (NULL, &err, prog, "-M" , device, NULL);
+ r = command (NULL, &err, prog, "-M", device, NULL);
if (r == -1) {
- reply_with_error ("%s", err);
+ int i = 0;
+ int len = strlen (err);
Use 'size_t' (instead of 'int') for the return value of strlen.
What is 'i' used for?
+ char *err_wrap = malloc (len + 1);
+ if (!err_wrap)
+ goto err_out;
You need to call 'reply_with_error' or 'reply_with_perror' exactly
once on each error path. So here you'd need to call
reply_with_perror ("malloc");
before the 'goto'.
+ char *p = strstr (err, "e2fsck -f");
+ if (p) {
+ strncpy (err_wrap, err, p - err);
Isn't it better to use memcpy here? AFAIK using strncpy is almost
always wrong. (Jim?)
+ err_wrap[p - err] = '\0';
+ sprintf(err_wrap + (p - err), "%s%s", "e2fsck-f", p + 9);
+ reply_with_error ("%s", err_wrap);
+ } else {
+ reply_with_error ("%s", err);
+ }
+
+ free (err_wrap);
+err_out:
free (err);
return -1;
}
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora
5:13 a.m.
On 01/13/2012 06:08 PM, Richard W.M. Jones wrote:
On Fri, Jan 13, 2012 at 02:27:49PM +0800, Wanlong Gao wrote:
> Tweak the error message "e2fsck -f" and "e2fsck -fy" to
> "e2fsck-f" and "e2fsck-fy".
>
> Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com>
> ---
> daemon/ext2.c | 20 ++++++++++++++++++--
> 1 files changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/daemon/ext2.c b/daemon/ext2.c
> index 79fd354..9fe938e 100644
> --- a/daemon/ext2.c
> +++ b/daemon/ext2.c
> @@ -277,9 +277,25 @@ do_resize2fs_M (const char *device)
> if (e2prog (prog) == -1)
> return -1;
>
> - r = command (NULL, &err, prog, "-M" , device, NULL);
> + r = command (NULL, &err, prog, "-M", device, NULL);
> if (r == -1) {
> - reply_with_error ("%s", err);
> + int i = 0;
> + int len = strlen (err);
Use 'size_t' (instead of 'int') for the return value of strlen.
yeah.
What is 'i' used for?
mistake, forgot to remove it.
> + char *err_wrap = malloc (len + 1);
> + if (!err_wrap)
> + goto err_out;
You need to call 'reply_with_error' or 'reply_with_perror' exactly
once on each error path. So here you'd need to call
reply_with_perror ("malloc");
before the 'goto'.
yes, I see.
> + char *p = strstr (err, "e2fsck -f");
> + if (p) {
> + strncpy (err_wrap, err, p - err);
Isn't it better to use memcpy here? AFAIK using strncpy is almost
always wrong. (Jim?)
yes, you are right, I'll change to memcpy.
Thanks a lot
-Wanlong Gao
> + err_wrap[p - err] = '\0';
> + sprintf(err_wrap + (p - err), "%s%s", "e2fsck-f", p + 9);
> + reply_with_error ("%s", err_wrap);
> + } else {
> + reply_with_error ("%s", err);
> + }
> +
> + free (err_wrap);
> +err_out:
> free (err);
> return -1;
> }
Rich.
5:29 a.m.
Richard W.M. Jones wrote:
On Fri, Jan 13, 2012 at 02:27:49PM +0800, Wanlong Gao wrote:
> Tweak the error message "e2fsck -f" and "e2fsck -fy" to
> "e2fsck-f" and "e2fsck-fy".
>
> Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com>
> ---
> daemon/ext2.c | 20 ++++++++++++++++++--
> 1 files changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/daemon/ext2.c b/daemon/ext2.c
> index 79fd354..9fe938e 100644
> --- a/daemon/ext2.c
> +++ b/daemon/ext2.c
> @@ -277,9 +277,25 @@ do_resize2fs_M (const char *device)
> if (e2prog (prog) == -1)
> return -1;
>
> - r = command (NULL, &err, prog, "-M" , device, NULL);
> + r = command (NULL, &err, prog, "-M", device, NULL);
> if (r == -1) {
> - reply_with_error ("%s", err);
> + int i = 0;
> + int len = strlen (err);
Use 'size_t' (instead of 'int') for the return value of strlen.
What is 'i' used for?
> + char *err_wrap = malloc (len + 1);
> + if (!err_wrap)
> + goto err_out;
You need to call 'reply_with_error' or 'reply_with_perror' exactly
once on each error path. So here you'd need to call
reply_with_perror ("malloc");
before the 'goto'.
> + char *p = strstr (err, "e2fsck -f");
> + if (p) {
> + strncpy (err_wrap, err, p - err);
Isn't it better to use memcpy here? AFAIK using strncpy is almost
always wrong. (Jim?)
I would. The fact that strncpy does not always NUL-terminate
makes it hard to use correctly. Better to avoid it in general.
> + err_wrap[p - err] = '\0';
> + sprintf(err_wrap + (p - err), "%s%s", "e2fsck-f", p + 9);
Also, as a general rule, it is easier to code and maintain
uses of asprintf than separate malloc+sprintf.
You can depend on asprintf, since it is provided by gnulib, if needed.
And, technically sprintf can fail (with glibc, it may even invoke malloc!),
so you should handle failure.
4697
days inactive
4697
days old
8 comments
4 participants
participants (4)
-
Jim Meyering -
Richard W.M. Jones -
Wanlong Gao -
Wanlong Gao