From: Steven Rostedt <rostedt@goodmis.org> To: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: "Michal Marek" <mmarek@suse.cz>, "Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>, "Måns Rullgård" <mans@mansr.com>, "Arnd Bergmann" <arnd@arndb.de>, linux-kbuild@vger.kernel.org, linux-arm-msm@vger.kernel.org, "Nicolas Pitre" <nico@fluxnic.net>, "Stephen Boyd" <sboyd@codeaurora.org>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 1/2] scripts: Add a recorduidiv program Date: Wed, 2 Dec 2015 09:05:17 -0500 [thread overview] Message-ID: <20151202090517.432556a4@gandalf.local.home> (raw) In-Reply-To: <20151202102339.GB8644@n2100.arm.linux.org.uk> On Wed, 2 Dec 2015 10:23:39 +0000 Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: > On Tue, Dec 01, 2015 at 06:16:43PM +0000, Russell King - ARM Linux wrote: > > On Tue, Dec 01, 2015 at 12:22:12PM -0500, Steven Rostedt wrote: > > > I guess another solution is to do a copy instead of modifying in place > > > if it detects the multiple hard link? > > > > That would be the "transparent" solution. If you think it's worth > > persuing, I'll have a go at fixing recordmcount to do that. > > Well, copying the file is easy - I've tested this and the linker > appears happy with the result: Want to make this into a proper patch and I'll start running it through my tests? -- Steve > > scripts/recordmcount.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c > index 698768bdc581..91705ef30402 100644 > --- a/scripts/recordmcount.c > +++ b/scripts/recordmcount.c > @@ -211,6 +211,20 @@ static void *mmap_file(char const *fname) > addr = umalloc(sb.st_size); > uread(fd_map, addr, sb.st_size); > } > + if (sb.st_nlink != 1) { > + /* file is hard-linked, break the hard link */ > + close(fd_map); > + if (unlink(fname) < 0) { > + perror(fname); > + fail_file(); > + } > + fd_map = open(fname, O_RDWR | O_CREAT, sb.st_mode); > + if (fd_map < 0) { > + perror(fname); > + fail_file(); > + } > + uwrite(fd_map, addr, sb.st_size); > + } > return addr; > } > >
WARNING: multiple messages have this Message-ID (diff)
From: rostedt@goodmis.org (Steven Rostedt) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/2] scripts: Add a recorduidiv program Date: Wed, 2 Dec 2015 09:05:17 -0500 [thread overview] Message-ID: <20151202090517.432556a4@gandalf.local.home> (raw) In-Reply-To: <20151202102339.GB8644@n2100.arm.linux.org.uk> On Wed, 2 Dec 2015 10:23:39 +0000 Russell King - ARM Linux <linux@arm.linux.org.uk> wrote: > On Tue, Dec 01, 2015 at 06:16:43PM +0000, Russell King - ARM Linux wrote: > > On Tue, Dec 01, 2015 at 12:22:12PM -0500, Steven Rostedt wrote: > > > I guess another solution is to do a copy instead of modifying in place > > > if it detects the multiple hard link? > > > > That would be the "transparent" solution. If you think it's worth > > persuing, I'll have a go at fixing recordmcount to do that. > > Well, copying the file is easy - I've tested this and the linker > appears happy with the result: Want to make this into a proper patch and I'll start running it through my tests? -- Steve > > scripts/recordmcount.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c > index 698768bdc581..91705ef30402 100644 > --- a/scripts/recordmcount.c > +++ b/scripts/recordmcount.c > @@ -211,6 +211,20 @@ static void *mmap_file(char const *fname) > addr = umalloc(sb.st_size); > uread(fd_map, addr, sb.st_size); > } > + if (sb.st_nlink != 1) { > + /* file is hard-linked, break the hard link */ > + close(fd_map); > + if (unlink(fname) < 0) { > + perror(fname); > + fail_file(); > + } > + fd_map = open(fname, O_RDWR | O_CREAT, sb.st_mode); > + if (fd_map < 0) { > + perror(fname); > + fail_file(); > + } > + uwrite(fd_map, addr, sb.st_size); > + } > return addr; > } > >
next prev parent reply other threads:[~2015-12-02 14:05 UTC|newest] Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-25 21:51 [PATCH v2 0/2] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions Stephen Boyd 2015-11-25 21:51 ` Stephen Boyd 2015-11-25 21:51 ` Stephen Boyd 2015-11-25 21:51 ` [PATCH v2 1/2] scripts: Add a recorduidiv program Stephen Boyd 2015-11-25 21:51 ` Stephen Boyd 2015-11-25 23:47 ` Russell King - ARM Linux 2015-11-25 23:47 ` Russell King - ARM Linux 2015-11-30 15:11 ` Michal Marek 2015-11-30 15:11 ` Michal Marek 2015-11-30 15:32 ` Russell King - ARM Linux 2015-11-30 15:32 ` Russell King - ARM Linux 2015-11-30 15:32 ` Russell King - ARM Linux 2015-11-30 15:40 ` Michal Marek 2015-11-30 15:40 ` Michal Marek 2015-12-01 16:07 ` Michal Marek 2015-12-01 16:07 ` Michal Marek 2015-12-01 16:19 ` Russell King - ARM Linux 2015-12-01 16:19 ` Russell King - ARM Linux 2015-12-01 16:43 ` Michal Marek 2015-12-01 16:43 ` Michal Marek 2015-12-01 16:49 ` Steven Rostedt 2015-12-01 16:49 ` Steven Rostedt 2015-12-01 17:10 ` Russell King - ARM Linux 2015-12-01 17:10 ` Russell King - ARM Linux 2015-12-01 17:22 ` Steven Rostedt 2015-12-01 17:22 ` Steven Rostedt 2015-12-01 18:16 ` Russell King - ARM Linux 2015-12-01 18:16 ` Russell King - ARM Linux 2015-12-01 21:39 ` Michal Marek 2015-12-01 21:39 ` Michal Marek 2015-12-02 10:23 ` Russell King - ARM Linux 2015-12-02 10:23 ` Russell King - ARM Linux 2015-12-02 14:05 ` Steven Rostedt [this message] 2015-12-02 14:05 ` Steven Rostedt 2015-12-11 12:09 ` [PATCH] scripts: recordmcount: break hardlinks Russell King 2015-12-11 12:09 ` Russell King 2015-12-11 14:31 ` Steven Rostedt 2015-12-11 14:31 ` Steven Rostedt 2015-12-11 14:45 ` Russell King - ARM Linux 2015-12-11 14:45 ` Russell King - ARM Linux 2015-12-11 15:08 ` Steven Rostedt 2015-12-11 15:08 ` Steven Rostedt 2015-12-11 18:10 ` Steven Rostedt 2015-12-11 18:10 ` Steven Rostedt 2015-12-11 18:33 ` Russell King - ARM Linux 2015-12-11 18:33 ` Russell King - ARM Linux 2015-12-11 18:51 ` Steven Rostedt 2015-12-11 18:51 ` Steven Rostedt 2015-12-11 18:58 ` Russell King - ARM Linux 2015-12-11 18:58 ` Russell King - ARM Linux 2015-12-11 19:28 ` Steven Rostedt 2015-12-11 19:28 ` Steven Rostedt 2015-11-25 21:51 ` [PATCH v2 2/2] ARM: Replace calls to __aeabi_{u}idiv with udiv/sdiv instructions Stephen Boyd 2015-11-25 21:51 ` Stephen Boyd 2015-11-25 23:09 ` Nicolas Pitre 2015-11-25 23:09 ` Nicolas Pitre 2015-11-26 0:05 ` Russell King - ARM Linux 2015-11-26 0:05 ` Russell King - ARM Linux 2015-11-26 0:07 ` Måns Rullgård 2015-11-26 0:07 ` Måns Rullgård 2015-11-26 0:44 ` Nicolas Pitre 2015-11-26 0:44 ` Nicolas Pitre 2015-11-26 0:50 ` Måns Rullgård 2015-11-26 0:50 ` Måns Rullgård 2015-11-26 0:50 ` Måns Rullgård 2015-11-26 1:28 ` Russell King - ARM Linux 2015-11-26 1:28 ` Russell King - ARM Linux 2015-11-26 1:28 ` Russell King - ARM Linux 2015-11-26 2:19 ` Måns Rullgård 2015-11-26 2:19 ` Måns Rullgård 2015-11-26 2:19 ` Måns Rullgård 2015-11-26 5:32 ` Nicolas Pitre 2015-11-26 5:32 ` Nicolas Pitre 2015-11-26 12:41 ` Måns Rullgård 2015-11-26 12:41 ` Måns Rullgård 2015-11-26 12:41 ` Måns Rullgård 2015-11-26 0:08 ` Russell King - ARM Linux 2015-11-26 0:08 ` Russell King - ARM Linux 2015-11-26 0:08 ` Russell King - ARM Linux
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20151202090517.432556a4@gandalf.local.home \ --to=rostedt@goodmis.org \ --cc=arnd@arndb.de \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-arm-msm@vger.kernel.org \ --cc=linux-kbuild@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux@arm.linux.org.uk \ --cc=mans@mansr.com \ --cc=mmarek@suse.cz \ --cc=nico@fluxnic.net \ --cc=sboyd@codeaurora.org \ --cc=thomas.petazzoni@free-electrons.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.