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[209.132.180.131]) by mx.google.com with ESMTPS id r59si16082086plb.75.2017.07.04.12.54.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Jul 2017 12:54:32 -0700 (PDT) Received-SPF: pass (google.com: domain of libc-alpha-return-81662-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org header.b=Nqpntseu; spf=pass (google.com: domain of libc-alpha-return-81662-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom=libc-alpha-return-81662-patch=linaro.org@sourceware.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; q=dns; s=default; b=DNpEIjXd0ceVlsXtBBAafOfb3XFR07k HQL5h4s0OTyFeMe2XFy0qWApl1Vrzeo9L6zQhguZVKkF+4pAhx7JH/L3rV886Fy/ JCB+FpMqJpAcrLCe8oGlG4W4eRtoYVtZ5CUBUARQuioPNBCUl98ABLGBCOXWswkB F3ZGYUotolw0= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; s=default; bh=6+domb03oT26SWxXc6DxTEwldC0=; b=Nqpnt seudDLmPjICEltbR1+FcaPJTb3TPOMbMDiGZ+ArxedcvXYuWqKx9OJDm0zprm4Zf 0VjroKgzSrYhOeXDKeB9KSwCq3fOW3DRfj7sNzGqeQu7MwuRNLLvOXbpOoOxM+tr chYmRLHMKtrdyYuVYbLQZwoDcOjZcIgWcsCY9c= Received: (qmail 73262 invoked by alias); 4 Jul 2017 19:54:11 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 73207 invoked by uid 89); 4 Jul 2017 19:54:10 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-26.4 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_SPAM, SPF_PASS autolearn=ham version=3.3.2 spammy=1995 X-HELO: mail-qk0-f173.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=Onw9rW+Xab24Ot9V8gGJExejpV9ThaT42cj+GgHKhOg=; b=Q+9iGLmbEmrd/SGX6cByMNIvgl6xRl+VMUMlCFkV1RWKPABzi+B1mfywKLtCON954n 9SgENZv6Fsl5KxASVsrWpqZS6B/JkbD8eCMnDUDq8IfeJp8q2moEf9q8bc0UaZ4jpaS6 1XSreH+XIBbzD7UyloQTq7M0jULtZ2zEc4AKwrhwkG0C66uTN1EcVf234ts55cIENT0m 8JCLvUYIuI1Klc58iMpu7JzD6kakH7YBneD5dXQKNOZJis3sycEozpPSFN29/CJKXMDm XrSLA/llH0zLTBjMUmzO5yvmqXhLqQ6G0XXYOrYWwo1PNByfASoeFmPDapiXSz2y4JBH q1eA== X-Gm-Message-State: AKS2vOx2Ay3zN1Vpapap9gj17aefOyiqFWdAfajWwgfdUAJqAwfGlCCD 0nQAjfElUVkjDN8saFgyNg== X-Received: by 10.55.146.133 with SMTP id u127mr50826986qkd.17.1499198046422; Tue, 04 Jul 2017 12:54:06 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 03/14] Consolidate non cancellable write call Date: Tue, 4 Jul 2017 16:53:43 -0300 Message-Id: <1499198034-5837-4-git-send-email-adhemerval.zanella@linaro.org> In-Reply-To: <1499198034-5837-1-git-send-email-adhemerval.zanella@linaro.org> References: <1499198034-5837-1-git-send-email-adhemerval.zanella@linaro.org> This patch consolidates all the non cancellable write calls to use the __write_nocancel identifier. For non cancellable targets it will be just a macro to call the default respective symbol while on Linux will be a internal one. Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu. * sysdeps/generic/not-cancel.h (write_not_cancel): Remove macro. (__write_nocancel): New macro. * sysdeps/unix/sysv/linux/not-cancel.h (__write_nocancel): Rewrite as a function prototype. (write_not_cancel): Remove macro. * sysdeps/unix/sysv/linux/write.c (__write_nocancel): New function. * gmon/gmon.c (ERR): Replace write_not_cancel with __write_nocancel. (write_gmon): Likewise. * libio/fileops.c (_IO_new_file_write): Likewise. * login/utmp_file.c (pututline_file): Likewise. (updwtmp_file): Likewise. * stdio-common/psiginfo.c (psiginfo): Likewise. * sysdeps/posix/spawni.c (__spawni_child): Likewise. * sysdeps/unix/sysv/linux/gethostid.c (sethostid): Likewise. * sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps): Likewise. * sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np): Likewise. --- ChangeLog | 19 +++++++++++++++++++ gmon/gmon.c | 4 ++-- libio/fileops.c | 2 +- login/utmp_file.c | 4 ++-- stdio-common/psiginfo.c | 2 +- sysdeps/generic/not-cancel.h | 2 +- sysdeps/posix/spawni.c | 2 +- sysdeps/unix/sysv/linux/gethostid.c | 2 +- sysdeps/unix/sysv/linux/libc_fatal.c | 4 ++-- sysdeps/unix/sysv/linux/not-cancel.h | 8 ++------ sysdeps/unix/sysv/linux/pthread_setname.c | 2 +- sysdeps/unix/sysv/linux/write.c | 8 ++++++++ 12 files changed, 41 insertions(+), 18 deletions(-) -- 2.7.4 diff --git a/gmon/gmon.c b/gmon/gmon.c index 87c3c4e..e7701b9 100644 --- a/gmon/gmon.c +++ b/gmon/gmon.c @@ -58,7 +58,7 @@ struct gmonparam _gmonparam attribute_hidden = { GMON_PROF_OFF }; static int s_scale; #define SCALE_1_TO_1 0x10000L -#define ERR(s) write_not_cancel (STDERR_FILENO, s, sizeof (s) - 1) +#define ERR(s) __write_nocancel (STDERR_FILENO, s, sizeof (s) - 1) void moncontrol (int mode); void __moncontrol (int mode); @@ -375,7 +375,7 @@ write_gmon (void) memcpy (&ghdr.cookie[0], GMON_MAGIC, sizeof (ghdr.cookie)); ghdr.version = GMON_VERSION; memset (ghdr.spare, '\0', sizeof (ghdr.spare)); - write_not_cancel (fd, &ghdr, sizeof (struct gmon_hdr)); + __write_nocancel (fd, &ghdr, sizeof (struct gmon_hdr)); /* write PC histogram: */ write_hist (fd); diff --git a/libio/fileops.c b/libio/fileops.c index 80bd3f5..f025178 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -1251,7 +1251,7 @@ _IO_new_file_write (_IO_FILE *f, const void *data, _IO_ssize_t n) { _IO_ssize_t count = (__builtin_expect (f->_flags2 & _IO_FLAGS2_NOTCANCEL, 0) - ? write_not_cancel (f->_fileno, data, to_do) + ? __write_nocancel (f->_fileno, data, to_do) : write (f->_fileno, data, to_do)); if (count < 0) { diff --git a/login/utmp_file.c b/login/utmp_file.c index 61d03d6..26e3f4b 100644 --- a/login/utmp_file.c +++ b/login/utmp_file.c @@ -444,7 +444,7 @@ pututline_file (const struct utmp *data) } /* Write the new data. */ - if (write_not_cancel (file_fd, data, sizeof (struct utmp)) + if (__write_nocancel (file_fd, data, sizeof (struct utmp)) != sizeof (struct utmp)) { /* If we appended a new record this is only partially written. @@ -505,7 +505,7 @@ updwtmp_file (const char *file, const struct utmp *utmp) /* Write the entry. If we can't write all the bytes, reset the file size back to the original size. That way, no partial entries will remain. */ - if (write_not_cancel (fd, utmp, sizeof (struct utmp)) + if (__write_nocancel (fd, utmp, sizeof (struct utmp)) != sizeof (struct utmp)) { __ftruncate64 (fd, offset); diff --git a/stdio-common/psiginfo.c b/stdio-common/psiginfo.c index 6954a42..7bf2e2d 100644 --- a/stdio-common/psiginfo.c +++ b/stdio-common/psiginfo.c @@ -199,5 +199,5 @@ Signal generated by the completion of an I/O request"); fclose (fp); - write_not_cancel (STDERR_FILENO, buf, strlen (buf)); + __write_nocancel (STDERR_FILENO, buf, strlen (buf)); } diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h index 4fada2f..e91cb6c 100644 --- a/sysdeps/generic/not-cancel.h +++ b/sysdeps/generic/not-cancel.h @@ -36,7 +36,7 @@ (void) __close (fd) #define __read_nocancel(fd, buf, n) \ __read (fd, buf, n) -#define write_not_cancel(fd, buf, n) \ +#define __write_nocancel(fd, buf, n) \ __write (fd, buf, n) #define writev_not_cancel_no_status(fd, iov, n) \ (void) __writev (fd, iov, n) diff --git a/sysdeps/posix/spawni.c b/sysdeps/posix/spawni.c index aaca6e2..7617279 100644 --- a/sysdeps/posix/spawni.c +++ b/sysdeps/posix/spawni.c @@ -234,7 +234,7 @@ fail: /* Since sizeof errno < PIPE_BUF, the write is atomic. */ ret = -ret; if (ret) - while (write_not_cancel (args->pipe[1], &ret, sizeof (ret)) < 0); + while (__write_nocancel (args->pipe[1], &ret, sizeof (ret)) < 0); _exit (SPAWN_ERROR); } diff --git a/sysdeps/unix/sysv/linux/gethostid.c b/sysdeps/unix/sysv/linux/gethostid.c index 6e19dee..11c7e73 100644 --- a/sysdeps/unix/sysv/linux/gethostid.c +++ b/sysdeps/unix/sysv/linux/gethostid.c @@ -51,7 +51,7 @@ sethostid (long int id) if (fd < 0) return -1; - written = write_not_cancel (fd, &id32, sizeof (id32)); + written = __write_nocancel (fd, &id32, sizeof (id32)); close_not_cancel_no_status (fd); diff --git a/sysdeps/unix/sysv/linux/libc_fatal.c b/sysdeps/unix/sysv/linux/libc_fatal.c index ca838a7..c7c6a07 100644 --- a/sysdeps/unix/sysv/linux/libc_fatal.c +++ b/sysdeps/unix/sysv/linux/libc_fatal.c @@ -48,7 +48,7 @@ backtrace_and_maps (int do_abort, bool written, int fd) if (n > 2) { #define strnsize(str) str, strlen (str) -#define writestr(str) write_not_cancel (fd, str) +#define writestr(str) __write_nocancel (fd, str) writestr (strnsize ("======= Backtrace: =========\n")); __backtrace_symbols_fd (addrs + 1, n - 1, fd); @@ -57,7 +57,7 @@ backtrace_and_maps (int do_abort, bool written, int fd) char buf[1024]; ssize_t n2; while ((n2 = __read_nocancel (fd2, buf, sizeof (buf))) > 0) - if (write_not_cancel (fd, buf, n2) != n2) + if (__write_nocancel (fd, buf, n2) != n2) break; close_not_cancel_no_status (fd2); } diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h index 3d26075..84dc72a 100644 --- a/sysdeps/unix/sysv/linux/not-cancel.h +++ b/sysdeps/unix/sysv/linux/not-cancel.h @@ -39,8 +39,8 @@ __typeof (__read) __read_nocancel; libc_hidden_proto (__read_nocancel) /* Uncancelable write. */ -#define __write_nocancel(fd, buf, len) \ - INLINE_SYSCALL (write, 3, fd, buf, len) +__typeof (__write) __write_nocancel; +libc_hidden_proto (__write_nocancel) /* Uncancelable openat. */ #define openat_not_cancel(fd, fname, oflag, mode) \ @@ -61,10 +61,6 @@ libc_hidden_proto (__read_nocancel) (void) ({ INTERNAL_SYSCALL_DECL (err); \ INTERNAL_SYSCALL (close, err, 1, (fd)); }) -/* Uncancelable write. */ -#define write_not_cancel(fd, buf, n) \ - __write_nocancel (fd, buf, n) - /* Uncancelable writev. */ #define writev_not_cancel_no_status(fd, iov, n) \ (void) ({ INTERNAL_SYSCALL_DECL (err); \ diff --git a/sysdeps/unix/sysv/linux/pthread_setname.c b/sysdeps/unix/sysv/linux/pthread_setname.c index 93f0e9d..c5e9a33 100644 --- a/sysdeps/unix/sysv/linux/pthread_setname.c +++ b/sysdeps/unix/sysv/linux/pthread_setname.c @@ -51,7 +51,7 @@ pthread_setname_np (pthread_t th, const char *name) return errno; int res = 0; - ssize_t n = TEMP_FAILURE_RETRY (write_not_cancel (fd, name, name_len)); + ssize_t n = TEMP_FAILURE_RETRY (__write_nocancel (fd, name, name_len)); if (n < 0) res = errno; else if (n != name_len) diff --git a/sysdeps/unix/sysv/linux/write.c b/sysdeps/unix/sysv/linux/write.c index d495145..bf12ca5 100644 --- a/sysdeps/unix/sysv/linux/write.c +++ b/sysdeps/unix/sysv/linux/write.c @@ -18,6 +18,7 @@ #include #include +#include /* Write NBYTES of BUF to FD. Return the number written, or -1. */ ssize_t @@ -31,3 +32,10 @@ weak_alias (__libc_write, __write) libc_hidden_weak (__write) weak_alias (__libc_write, write) libc_hidden_weak (write) + +ssize_t +__write_nocancel (int fd, const void *buf, size_t nbytes) +{ + return INLINE_SYSCALL_CALL (write, fd, buf, nbytes); +} +libc_hidden_def (__write_nocancel)