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[209.132.180.131]) by mx.google.com with ESMTPS id u3si14264358pgo.497.2017.07.04.12.55.05 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Jul 2017 12:55:06 -0700 (PDT) Received-SPF: pass (google.com: domain of libc-alpha-return-81664-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=jaBvm52T; spf=pass (google.com: domain of libc-alpha-return-81664-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom=libc-alpha-return-81664-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=YY6dqhq+nQKJqrDtFI6SvsYRoYkzhNC TezS0dP0LquMZzbUFkzh0pr9HvjErc/qxThrzXser3JifGuQd15+xmAWrjam4LJm dqFzgtly17zKt1uxpn7KI6wRCnoZR2Bt7DaGKdpwtW30O0IkqVEq1iJSiUW6daex zgWCOb/6UG0I= 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=d0kF3vqU5XDRZQqbugCNUvlcy1Q=; b=jaBvm 52TEFquCrsMYy7U7naeVFHPB/++X37eMsjSx3XP/NXXp+XRqeSAXGtVW1+rT/v/g 08hXnhDa1g7Ijhxj3F9wzDyZA3tdi0PRg5Uwv0zjdQGNcB5/xo354/3nD4f+CixS IFuFSGvs9GlyQh/8QYGUtXtBPcn1kzy5ARy9BM= Received: (qmail 74287 invoked by alias); 4 Jul 2017 19:54:21 -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 73503 invoked by uid 89); 4 Jul 2017 19:54:13 -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=Non X-HELO: mail-qk0-f170.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=1sOAmxsEPAvaMmYNfGC3jdL79wDYzy1dLxy6OcFOQGE=; b=RBwUv1ifRpzhDtrZSJRhGncYYddqHIYD1ax1STJhTPsyFZmlaTGrkVdlZI98Fl3uHm rOd4V7/w0SILWNh06QMq5f+Nf00M62beX97k6xoEx2PeKdrByOeefqqhu11/cTPGGIYv ezS9x6dmBLmE6SAeO7+N4XFKxRKZnq0f2TqfQ4hMJvlY5n0pwfVrAjCcSel3EgB6DGDJ TNlmsPmQBrAGkSCI9geDyLFWH4MHovyBBbiIy0Y9rb5JDrS9i9XJ2OwqQG7JMI6QGkTM YEpR0PhQwmtRCLqIZl9gi9HE52kqhJ346ys0wvKTM42LTb+1jqAVAHB9bDrLGu8Vjojx VbcA== X-Gm-Message-State: AIVw112StrC+7Ijz+9epggDxA/bEnTzs1usLZ7SZEnL71W7N1V8Qa+Cq y7+0RZ5MHYBi96eJJ21/Ug== X-Received: by 10.55.153.4 with SMTP id b4mr19298285qke.203.1499198045029; Tue, 04 Jul 2017 12:54:05 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 02/14] Consolidate non cancellable read call Date: Tue, 4 Jul 2017 16:53:42 -0300 Message-Id: <1499198034-5837-3-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 read calls to use the __read_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. Also, since it is used on libcrypto it is exported in GLIBC_PRIVATE namespace. Checked on x86_64-linux-gnu, x86_64-linux-gnu-x32, and i686-linux-gnu. * sysdeps/generic/not-cancel.h (read_not_cancel): Remove macro. (__read_nocancel): New macro. * sysdeps/unix/sysv/linux/Versions (libc) [GLIBC_PRIVATE]: Add __read_nocancel. * sysdeps/unix/sysv/linux/not-cancel.h (__read_nocancel): Remove macro. (__read_nocancel): New prototype. * sysdeps/unix/sysv/linux/read.c (__read_nocancel): New function. * catgets/open_catalog.c (__open_catalog): Replace read_not_cancel with __read_nocancel. * intl/loadmsgcat.c (read): Likewise. * libio/fileops.c (_IO_file_read): Likewise. * locale/loadlocale.c (_nl_load_locale): Likewise. * login/utmp_file.c (getutent_r_file): Likewise. (internal_getut_r): Likewise. (getutline_r_file): Likewise. * sysdeps/unix/sysv/linux/fips-private.h (fips_enable_p): Likewise. * sysdeps/unix/sysv/linux/gethostid.c (gethostid): Likewise. * sysdeps/unix/sysv/linux/getloadavg.c (getloadavg): Likewise. * sysdeps/unix/sysv/linux/getlogin_r.c (__getlogin_r_loginuid): Likewise. * sysdeps/unix/sysv/linux/getsysstats.c (next_line): Likewise. * sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): Likewise. * sysdeps/unix/sysv/linux/ia64/has_cpuclock.c (has_cpuclock): Likewise. * sysdeps/unix/sysv/linux/libc_fatal.c (backtrace_and_maps): Likewise. * sysdeps/unix/sysv/linux/malloc-sysdep.h (check_may_shrink_heap): Likewise. * sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np): Likewise. * sysdeps/unix/sysv/linux/sysconf.c (__sysconf): Likewise. --- ChangeLog | 33 +++++++++++++++++++++++++++++ catgets/open_catalog.c | 2 +- intl/loadmsgcat.c | 2 +- libio/fileops.c | 2 +- locale/loadlocale.c | 2 +- login/utmp_file.c | 8 +++---- sysdeps/generic/not-cancel.h | 2 +- sysdeps/unix/sysv/linux/Versions | 1 + sysdeps/unix/sysv/linux/fips-private.h | 2 +- sysdeps/unix/sysv/linux/gethostid.c | 2 +- sysdeps/unix/sysv/linux/getloadavg.c | 2 +- sysdeps/unix/sysv/linux/getlogin_r.c | 2 +- sysdeps/unix/sysv/linux/getsysstats.c | 4 ++-- sysdeps/unix/sysv/linux/i386/smp.h | 2 +- sysdeps/unix/sysv/linux/ia64/has_cpuclock.c | 2 +- sysdeps/unix/sysv/linux/libc_fatal.c | 2 +- sysdeps/unix/sysv/linux/malloc-sysdep.h | 2 +- sysdeps/unix/sysv/linux/not-cancel.h | 10 +++------ sysdeps/unix/sysv/linux/pthread_getname.c | 2 +- sysdeps/unix/sysv/linux/read.c | 8 +++++++ sysdeps/unix/sysv/linux/sysconf.c | 2 +- 21 files changed, 66 insertions(+), 28 deletions(-) -- 2.7.4 diff --git a/catgets/open_catalog.c b/catgets/open_catalog.c index 4621b26..d79a6b1 100644 --- a/catgets/open_catalog.c +++ b/catgets/open_catalog.c @@ -237,7 +237,7 @@ __open_catalog (const char *cat_name, const char *nlspath, const char *env_var, /* Save read, handle partial reads. */ do { - size_t now = read_not_cancel (fd, (((char *) catalog->file_ptr) + size_t now = __read_nocancel (fd, (((char *) catalog->file_ptr) + (st.st_size - todo)), todo); if (now == 0 || now == (size_t) -1) { diff --git a/intl/loadmsgcat.c b/intl/loadmsgcat.c index adca419..514e38f 100644 --- a/intl/loadmsgcat.c +++ b/intl/loadmsgcat.c @@ -447,7 +447,7 @@ file and the name space must not be polluted. */ # define open(name, flags) __open_nocancel (name, flags) # define close(fd) close_not_cancel_no_status (fd) -# define read(fd, buf, n) read_not_cancel (fd, buf, n) +# define read(fd, buf, n) __read_nocancel (fd, buf, n) # define mmap(addr, len, prot, flags, fd, offset) \ __mmap (addr, len, prot, flags, fd, offset) # define munmap(addr, len) __munmap (addr, len) diff --git a/libio/fileops.c b/libio/fileops.c index 67f3d72..80bd3f5 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -1204,7 +1204,7 @@ _IO_ssize_t _IO_file_read (_IO_FILE *fp, void *buf, _IO_ssize_t size) { return (__builtin_expect (fp->_flags2 & _IO_FLAGS2_NOTCANCEL, 0) - ? read_not_cancel (fp->_fileno, buf, size) + ? __read_nocancel (fp->_fileno, buf, size) : read (fp->_fileno, buf, size)); } libc_hidden_def (_IO_file_read) diff --git a/locale/loadlocale.c b/locale/loadlocale.c index 9c69ad4..a733557 100644 --- a/locale/loadlocale.c +++ b/locale/loadlocale.c @@ -238,7 +238,7 @@ _nl_load_locale (struct loaded_l10nfile *file, int category) char *p = (char *) filedata; while (to_read > 0) { - nread = read_not_cancel (fd, p, to_read); + nread = __read_nocancel (fd, p, to_read); if (__builtin_expect (nread, 1) <= 0) { free (filedata); diff --git a/login/utmp_file.c b/login/utmp_file.c index 1407116..61d03d6 100644 --- a/login/utmp_file.c +++ b/login/utmp_file.c @@ -187,7 +187,7 @@ getutent_r_file (struct utmp *buffer, struct utmp **result) } /* Read the next entry. */ - nbytes = read_not_cancel (file_fd, &last_entry, sizeof (struct utmp)); + nbytes = __read_nocancel (file_fd, &last_entry, sizeof (struct utmp)); UNLOCK_FILE (file_fd); @@ -231,7 +231,7 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer, while (1) { /* Read the next entry. */ - if (read_not_cancel (file_fd, buffer, sizeof (struct utmp)) + if (__read_nocancel (file_fd, buffer, sizeof (struct utmp)) != sizeof (struct utmp)) { __set_errno (ESRCH); @@ -253,7 +253,7 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer, while (1) { /* Read the next entry. */ - if (read_not_cancel (file_fd, buffer, sizeof (struct utmp)) + if (__read_nocancel (file_fd, buffer, sizeof (struct utmp)) != sizeof (struct utmp)) { __set_errno (ESRCH); @@ -329,7 +329,7 @@ getutline_r_file (const struct utmp *line, struct utmp *buffer, while (1) { /* Read the next entry. */ - if (read_not_cancel (file_fd, &last_entry, sizeof (struct utmp)) + if (__read_nocancel (file_fd, &last_entry, sizeof (struct utmp)) != sizeof (struct utmp)) { __set_errno (ESRCH); diff --git a/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h index a4f7b7b..4fada2f 100644 --- a/sysdeps/generic/not-cancel.h +++ b/sysdeps/generic/not-cancel.h @@ -34,7 +34,7 @@ __close (fd) #define close_not_cancel_no_status(fd) \ (void) __close (fd) -#define read_not_cancel(fd, buf, n) \ +#define __read_nocancel(fd, buf, n) \ __read (fd, buf, n) #define write_not_cancel(fd, buf, n) \ __write (fd, buf, n) diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions index 3c64077..b553514 100644 --- a/sysdeps/unix/sysv/linux/Versions +++ b/sysdeps/unix/sysv/linux/Versions @@ -170,6 +170,7 @@ libc { # functions used in other libraries __syscall_rt_sigqueueinfo; __open_nocancel; + __read_nocancel; # functions used by nscd __netlink_assert_response; } diff --git a/sysdeps/unix/sysv/linux/fips-private.h b/sysdeps/unix/sysv/linux/fips-private.h index 3a83a0f..775f2c2 100644 --- a/sysdeps/unix/sysv/linux/fips-private.h +++ b/sysdeps/unix/sysv/linux/fips-private.h @@ -49,7 +49,7 @@ fips_enabled_p (void) /* This is more than enough, the file contains a single integer. */ char buf[32]; ssize_t n; - n = TEMP_FAILURE_RETRY (read_not_cancel (fd, buf, sizeof (buf) - 1)); + n = TEMP_FAILURE_RETRY (__read_nocancel (fd, buf, sizeof (buf) - 1)); close_not_cancel_no_status (fd); if (n > 0) diff --git a/sysdeps/unix/sysv/linux/gethostid.c b/sysdeps/unix/sysv/linux/gethostid.c index 3ea8656..6e19dee 100644 --- a/sysdeps/unix/sysv/linux/gethostid.c +++ b/sysdeps/unix/sysv/linux/gethostid.c @@ -80,7 +80,7 @@ gethostid (void) fd = __open_nocancel (HOSTIDFILE, O_RDONLY|O_LARGEFILE, 0); if (fd >= 0) { - ssize_t n = read_not_cancel (fd, &id, sizeof (id)); + ssize_t n = __read_nocancel (fd, &id, sizeof (id)); close_not_cancel_no_status (fd); diff --git a/sysdeps/unix/sysv/linux/getloadavg.c b/sysdeps/unix/sysv/linux/getloadavg.c index 0bfe41d..64bad17 100644 --- a/sysdeps/unix/sysv/linux/getloadavg.c +++ b/sysdeps/unix/sysv/linux/getloadavg.c @@ -42,7 +42,7 @@ getloadavg (double loadavg[], int nelem) ssize_t nread; int i; - nread = read_not_cancel (fd, buf, sizeof buf - 1); + nread = __read_nocancel (fd, buf, sizeof buf - 1); close_not_cancel_no_status (fd); if (nread <= 0) return -1; diff --git a/sysdeps/unix/sysv/linux/getlogin_r.c b/sysdeps/unix/sysv/linux/getlogin_r.c index 2519792..1de746b 100644 --- a/sysdeps/unix/sysv/linux/getlogin_r.c +++ b/sysdeps/unix/sysv/linux/getlogin_r.c @@ -41,7 +41,7 @@ __getlogin_r_loginuid (char *name, size_t namesize) /* We are reading a 32-bit number. 12 bytes are enough for the text representation. If not, something is wrong. */ char uidbuf[12]; - ssize_t n = TEMP_FAILURE_RETRY (read_not_cancel (fd, uidbuf, + ssize_t n = TEMP_FAILURE_RETRY (__read_nocancel (fd, uidbuf, sizeof (uidbuf))); close_not_cancel_no_status (fd); diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c index e21a34c..d1400d6 100644 --- a/sysdeps/unix/sysv/linux/getsysstats.c +++ b/sysdeps/unix/sysv/linux/getsysstats.c @@ -85,7 +85,7 @@ next_line (int fd, char *const buffer, char **cp, char **re, *re = buffer + (*re - *cp); *cp = buffer; - ssize_t n = read_not_cancel (fd, *re, buffer_end - *re); + ssize_t n = __read_nocancel (fd, *re, buffer_end - *re); if (n < 0) return NULL; @@ -96,7 +96,7 @@ next_line (int fd, char *const buffer, char **cp, char **re, { /* Truncate too long lines. */ *re = buffer + 3 * (buffer_end - buffer) / 4; - n = read_not_cancel (fd, *re, buffer_end - *re); + n = __read_nocancel (fd, *re, buffer_end - *re); if (n < 0) return NULL; diff --git a/sysdeps/unix/sysv/linux/i386/smp.h b/sysdeps/unix/sysv/linux/i386/smp.h index c24f2fd..eb1ac5d 100644 --- a/sysdeps/unix/sysv/linux/i386/smp.h +++ b/sysdeps/unix/sysv/linux/i386/smp.h @@ -43,7 +43,7 @@ is_smp_system (void) /* This was not successful. Now try reading the /proc filesystem. */ int fd = __open_nocancel ("/proc/sys/kernel/version", O_RDONLY); if (__builtin_expect (fd, 0) == -1 - || read_not_cancel (fd, u.buf, sizeof (u.buf)) <= 0) + || __read_nocancel (fd, u.buf, sizeof (u.buf)) <= 0) /* This also didn't work. We give up and say it's a UP machine. */ u.buf[0] = '\0'; diff --git a/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c b/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c index 04e395b..6aab1e8 100644 --- a/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c +++ b/sysdeps/unix/sysv/linux/ia64/has_cpuclock.c @@ -37,7 +37,7 @@ has_cpuclock (void) /* We expect the file to contain a single digit followed by a newline. If the format changes we better not rely on the file content. */ - if (read_not_cancel (fd, buf, sizeof buf) != 2 + if (__read_nocancel (fd, buf, sizeof buf) != 2 || buf[0] != '0' || buf[1] != '\n') newval = -1; diff --git a/sysdeps/unix/sysv/linux/libc_fatal.c b/sysdeps/unix/sysv/linux/libc_fatal.c index 5b484cf..ca838a7 100644 --- a/sysdeps/unix/sysv/linux/libc_fatal.c +++ b/sysdeps/unix/sysv/linux/libc_fatal.c @@ -56,7 +56,7 @@ backtrace_and_maps (int do_abort, bool written, int fd) int fd2 = __open_nocancel ("/proc/self/maps", O_RDONLY); char buf[1024]; ssize_t n2; - while ((n2 = read_not_cancel (fd2, buf, sizeof (buf))) > 0) + while ((n2 = __read_nocancel (fd2, buf, sizeof (buf))) > 0) if (write_not_cancel (fd, buf, n2) != n2) break; close_not_cancel_no_status (fd2); diff --git a/sysdeps/unix/sysv/linux/malloc-sysdep.h b/sysdeps/unix/sysv/linux/malloc-sysdep.h index cb87b58..7a7acba 100644 --- a/sysdeps/unix/sysv/linux/malloc-sysdep.h +++ b/sysdeps/unix/sysv/linux/malloc-sysdep.h @@ -47,7 +47,7 @@ check_may_shrink_heap (void) if (fd >= 0) { char val; - ssize_t n = read_not_cancel (fd, &val, 1); + ssize_t n = __read_nocancel (fd, &val, 1); may_shrink_heap = n > 0 && val == '2'; close_not_cancel_no_status (fd); } diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h index 8d897f0..3d26075 100644 --- a/sysdeps/unix/sysv/linux/not-cancel.h +++ b/sysdeps/unix/sysv/linux/not-cancel.h @@ -34,9 +34,9 @@ libc_hidden_proto (__open_nocancel) __typeof (open64) __open64_nocancel; libc_hidden_proto (__open64_nocancel) -/* Uncancelable read. */ -#define __read_nocancel(fd, buf, len) \ - INLINE_SYSCALL (read, 3, fd, buf, len) +/* Non cancellable read syscall. */ +__typeof (__read) __read_nocancel; +libc_hidden_proto (__read_nocancel) /* Uncancelable write. */ #define __write_nocancel(fd, buf, len) \ @@ -61,10 +61,6 @@ libc_hidden_proto (__open64_nocancel) (void) ({ INTERNAL_SYSCALL_DECL (err); \ INTERNAL_SYSCALL (close, err, 1, (fd)); }) -/* Uncancelable read. */ -#define read_not_cancel(fd, buf, n) \ - __read_nocancel (fd, buf, n) - /* Uncancelable write. */ #define write_not_cancel(fd, buf, n) \ __write_nocancel (fd, buf, n) diff --git a/sysdeps/unix/sysv/linux/pthread_getname.c b/sysdeps/unix/sysv/linux/pthread_getname.c index caab2cc..93c1dfd 100644 --- a/sysdeps/unix/sysv/linux/pthread_getname.c +++ b/sysdeps/unix/sysv/linux/pthread_getname.c @@ -50,7 +50,7 @@ pthread_getname_np (pthread_t th, char *buf, size_t len) return errno; int res = 0; - ssize_t n = TEMP_FAILURE_RETRY (read_not_cancel (fd, buf, len)); + ssize_t n = TEMP_FAILURE_RETRY (__read_nocancel (fd, buf, len)); if (n < 0) res = errno; else diff --git a/sysdeps/unix/sysv/linux/read.c b/sysdeps/unix/sysv/linux/read.c index 2a02c1b..e519474 100644 --- a/sysdeps/unix/sysv/linux/read.c +++ b/sysdeps/unix/sysv/linux/read.c @@ -18,6 +18,7 @@ #include #include +#include /* Read NBYTES into BUF from FD. Return the number read or -1. */ ssize_t @@ -31,3 +32,10 @@ libc_hidden_def (__read) weak_alias (__libc_read, __read) libc_hidden_def (read) weak_alias (__libc_read, read) + +ssize_t +__read_nocancel (int fd, void *buf, size_t nbytes) +{ + return INLINE_SYSCALL_CALL (read, fd, buf, nbytes); +} +libc_hidden_def (__read_nocancel) diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c index ab068ab..f9becfb 100644 --- a/sysdeps/unix/sysv/linux/sysconf.c +++ b/sysdeps/unix/sysv/linux/sysconf.c @@ -121,7 +121,7 @@ __sysconf (int name) /* This is more than enough, the file contains a single integer. */ char buf[32]; ssize_t n; - n = TEMP_FAILURE_RETRY (read_not_cancel (fd, buf, sizeof (buf) - 1)); + n = TEMP_FAILURE_RETRY (__read_nocancel (fd, buf, sizeof (buf) - 1)); close_not_cancel_no_status (fd); if (n > 0)