diff options
Diffstat (limited to 'sysdeps/posix/libc_fatal.c')
| -rw-r--r-- | sysdeps/posix/libc_fatal.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/sysdeps/posix/libc_fatal.c b/sysdeps/posix/libc_fatal.c index 8d416006b5..afa1b816c3 100644 --- a/sysdeps/posix/libc_fatal.c +++ b/sysdeps/posix/libc_fatal.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1993-2013 Free Software Foundation, Inc. +/* Catastrophic failure reports. Generic POSIX.1 version. + Copyright (C) 1993-2013 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -27,6 +28,7 @@ #include <string.h> #include <sysdep.h> #include <unistd.h> +#include <sys/mman.h> #include <sys/syslog.h> #include <sys/uio.h> #include <not-cancel.h> @@ -35,6 +37,25 @@ #include FATAL_PREPARE_INCLUDE #endif +#ifndef WRITEV_FOR_FATAL +# define WRITEV_FOR_FATAL writev_for_fatal +static bool +writev_for_fatal (int fd, const struct iovec *iov, size_t niov, size_t total) +{ + return TEMP_FAILURE_RETRY (__writev (fd, iov, niov)) == total; +} +#endif + +#ifndef BEFORE_ABORT +# define BEFORE_ABORT before_abort +static void +before_abort (int do_abort __attribute__ ((unused)), + bool written __attribute__ ((unused)), + int fd __attribute__ ((unused))) +{ +} +#endif + struct str_list { const char *str; @@ -42,7 +63,6 @@ struct str_list struct str_list *next; }; - /* Abort with an error message. */ void __libc_message (int do_abort, const char *fmt, ...) @@ -121,8 +141,7 @@ __libc_message (int do_abort, const char *fmt, ...) list = list->next; } - if (TEMP_FAILURE_RETRY (__writev (fd, iov, nlist)) == total) - written = true; + written = WRITEV_FOR_FATAL (fd, iov, nlist, total); if (do_abort) { @@ -131,7 +150,7 @@ __libc_message (int do_abort, const char *fmt, ...) struct abort_msg_s *buf = __mmap (NULL, total, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); - if (buf != MAP_FAILED) + if (__glibc_likely (buf != MAP_FAILED)) { buf->size = total; char *wp = buf->msg; @@ -158,8 +177,12 @@ __libc_message (int do_abort, const char *fmt, ...) va_end (ap_copy); if (do_abort) - /* Kill the application. */ - abort (); + { + BEFORE_ABORT (do_abort, written, fd); + + /* Kill the application. */ + abort (); + } } |