diff options
Diffstat (limited to 'stdio-common/psiginfo.c')
| -rw-r--r-- | stdio-common/psiginfo.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/stdio-common/psiginfo.c b/stdio-common/psiginfo.c new file mode 100644 index 0000000000..9fc2911fd1 --- /dev/null +++ b/stdio-common/psiginfo.c @@ -0,0 +1,183 @@ +/* Copyright (C) 2009 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <libintl.h> +#include <signal.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <not-cancel.h> + + +/* Defined in sys_siglist.c. */ +extern const char *const _sys_siglist[]; +extern const char *const _sys_siglist_internal[] attribute_hidden; + + +#define MF(l) MF1 (l) +#define MF1(l) str_##l +#define C(s1, s2) C1 (s1, s2) +#define C1(s1, s2) s1##s2 + +#define NOW SIGILL +#include "psiginfo-define.h" + +#define NOW SIGFPE +#include "psiginfo-define.h" + +#define NOW SIGSEGV +#include "psiginfo-define.h" + +#define NOW SIGBUS +#include "psiginfo-define.h" + +#define NOW SIGTRAP +#include "psiginfo-define.h" + +#define NOW SIGCLD +#include "psiginfo-define.h" + +#define NOW SIGPOLL +#include "psiginfo-define.h" + + +/* Print out on stderr a line consisting of the test in S, a colon, a space, + a message describing the meaning of the signal number PINFO and a newline. + If S is NULL or "", the colon and space are omitted. */ +void +psiginfo (const siginfo_t *pinfo, const char *s) +{ + char buf[512]; + FILE *fp = fmemopen (buf, sizeof (buf), "w"); + if (fp == NULL) + { + const char *colon; + + if (s == NULL || *s == '\0') + s = colon = ""; + else + colon = ": "; + + __fxprintf (NULL, "%s%ssignal %d\n", s, colon, pinfo->si_signo); + return; + } + + if (s != NULL && *s != '\0') + fprintf (fp, "%s: ", s); + + const char *desc; + if (pinfo->si_signo >= 0 && pinfo->si_signo < NSIG + && (desc = INTUSE(_sys_siglist)[pinfo->si_signo]) != NULL) + { + fprintf (fp, "%s (", _(desc)); + + const char *base = NULL; + const uint8_t *offarr = NULL; + size_t offarr_len = 0; + switch (pinfo->si_signo) + { +#define H(sig) \ + case sig: \ + base = C(codestrs_, sig).str; \ + offarr = C (codes_, sig); \ + offarr_len = sizeof (C (codes_, sig)) / sizeof (C (codes_, sig)[0]);\ + break + + H (SIGILL); + H (SIGFPE); + H (SIGSEGV); + H (SIGBUS); + H (SIGTRAP); + H (SIGCHLD); + H (SIGPOLL); + } + + const char *str = NULL; + if (offarr != NULL + && pinfo->si_code >= 1 && pinfo->si_code <= offarr_len) + str = base + offarr[pinfo->si_code - 1]; + else + switch (pinfo->si_code) + { + case SI_USER: + str = N_("Signal sent by kill()"); + break; + case SI_QUEUE: + str = N_("Signal sent by sigqueue()"); + break; + case SI_TIMER: + str = N_("Signal generated by the expiration of a timer"); + break; + case SI_ASYNCIO: + str = N_("\ +Signal generated by the completion of an asynchronous I/O request"); + break; + case SI_MESGQ: + str = N_("\ +Signal generated by the arrival of a message on an empty message queue"); + break; +#ifdef SI_TKILL + case SI_TKILL: + str = N_("Signal sent by tkill()"); + break; +#endif +#ifdef SI_ASYNCNL + case SI_ASYNCNL: + str = N_("\ +Signal generated by the completion of an asynchronous name lookup request"); + break; +#endif +#ifdef SI_SIGIO + case SI_SIGIO: + str = N_("\ +Signal generated by the completion of an I/O request"); + break; +#endif +#ifdef SI_KERNEL + case SI_KERNEL: + str = N_("Signal sent by the kernel"); + break; +#endif + } + + if (str != NULL) + fprintf (fp, "%s ", _(str)); + else + fprintf (fp, "%d ", pinfo->si_code); + + if (pinfo->si_signo == SIGILL || pinfo->si_signo == SIGFPE + || pinfo->si_signo == SIGSEGV || pinfo->si_signo == SIGBUS) + fprintf (fp, "[%p])", pinfo->si_addr); + else if (pinfo->si_signo == SIGCHLD) + fprintf (fp, "%ld %d %ld)", (long int) pinfo->si_pid, pinfo->si_status, + (long int) pinfo->si_uid); + else if (pinfo->si_signo == SIGPOLL) + fprintf (fp, "%ld)", pinfo->si_band); + else + fprintf (fp, "%ld %ld)", + (long int) pinfo->si_pid, (long int) pinfo->si_uid); + } + else + fprintf (fp, _("Unknown signal %d\n"), pinfo->si_signo); + + fclose (fp); + + write_not_cancel (STDERR_FILENO, buf, strlen (buf)); +} |