/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright 1999 Free Software Foundation, Inc.
+
+ Copyright (C) 1999-2016 Free Software Foundation, Inc.
+
Written by Michael Snyder at Cygnus Solutions.
Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program 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 General Public License for more details.
+ This program 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 General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software Foundation,
-Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/*
* Pretty-print trace of api calls to the /proc api
#include "defs.h"
#include "gdbcmd.h"
+#include "completer.h"
#if defined (NEW_PROC_API)
#define _STRUCTURED_PROC 1
#endif
-#include <stdio.h>
#include <sys/types.h>
#include <sys/procfs.h>
+#ifdef HAVE_SYS_PROC_H
#include <sys/proc.h> /* for struct proc */
+#endif
+#ifdef HAVE_SYS_USER_H
#include <sys/user.h> /* for struct user */
-#include <fcntl.h> /* for O_RDWR etc. */
-#include <sys/wait.h>
+#endif
+#include <fcntl.h> /* for O_RDWR etc. */
+#include "gdb_wait.h"
#include "proc-utils.h"
/* Much of the information used in the /proc interface, particularly for
printing status information, is kept as tables of structures of the
following form. These tables can be used to map numeric values to
- their symbolic names and to a string that describes their specific use. */
+ their symbolic names and to a string that describes their specific use. */
struct trans {
long value; /* The numeric value */
char *desc; /* Short description of value */
};
-static int procfs_trace = 1;
-/*static int info_verbose = 1;*/ /* kludge */
+static int procfs_trace = 0;
static FILE *procfs_file = NULL;
static char *procfs_filename = "procfs_trace";
static void
-set_procfs_trace_cmd (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+prepare_to_trace (void)
+{
+ if (procfs_trace) /* if procfs tracing turned on */
+ if (procfs_file == NULL) /* if output file not yet open */
+ if (procfs_filename != NULL) /* if output filename known */
+ procfs_file = fopen (procfs_filename, "a"); /* open output file */
+}
+
+static void
+set_procfs_trace_cmd (char *args, int from_tty, struct cmd_list_element *c)
{
#if 0 /* not sure what I might actually need to do here, if anything */
if (procfs_file)
}
static void
-set_procfs_file_cmd (args, from_tty, c)
- char *args;
- int from_tty;
- struct cmd_list_element *c;
+set_procfs_file_cmd (char *args, int from_tty, struct cmd_list_element *c)
{
/* Just changed the filename for procfs tracing.
If a file was already open, close it. */
{ PIOCGETPTIMER, "PIOCGETPTIMER", "get process timers" },
#endif /* irix event counters */
{ PIOCGENTRY, "PIOCGENTRY", "get traced syscall entry set" },
+#if defined (PIOCGETPR)
{ PIOCGETPR, "PIOCGETPR", "read struct proc" },
+#endif
+#if defined (PIOCGETU)
{ PIOCGETU, "PIOCGETU", "read user area" },
+#endif
#if defined (PIOCGETUTK) && (defined(KERNEL) || defined(SHOW_UTT)) /* osf */
{ PIOCGETUTK, "PIOCGETUTK", "get the utask struct" },
#endif
{ PIOCLDT, "PIOCLDT", "get LDT" },
{ PIOCNLDT, "PIOCNLDT", "get number of LDT entries" },
#endif
-#ifdef PIOCLSTATUS /* solaris and unixware */
+#ifdef PIOCLSTATUS /* solaris */
{ PIOCLSTATUS, "PIOCLSTATUS", "get status of all lwps" },
{ PIOCLUSAGE, "PIOCLUSAGE", "get resource usage of all lwps" },
{ PIOCOPENLWP, "PIOCOPENLWP", "get lwp file descriptor" },
};
int
-ioctl_with_trace (fd, opcode, ptr, file, line)
- int fd;
- long opcode;
- void *ptr;
- char *file;
- int line;
+ioctl_with_trace (int fd, long opcode, void *ptr, char *file, int line)
{
- int i, ret, arg1;
+ int i = 0;
+ int ret;
+ int arg1;
+
+ prepare_to_trace ();
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
for (i = 0; ioctl_table[i].name != NULL; i++)
if (ioctl_table[i].value == opcode)
break;
if (procfs_file)
fflush (procfs_file);
}
+ errno = 0;
ret = ioctl (fd, opcode, ptr);
if (procfs_trace && ret < 0)
{
fprintf (procfs_file ? procfs_file : stdout,
- "[ioctl (%s) FAILED!]\n",
+ "[ioctl (%s) FAILED! (%s)]\n",
ioctl_table[i].name != NULL ?
- ioctl_table[i].name : "<unknown>");
+ ioctl_table[i].name : "<unknown>",
+ safe_strerror (errno));
if (procfs_file)
fflush (procfs_file);
}
#ifdef PCCSIG /* solaris */
{ PCCSIG, "PCCSIG", "clear current signal" },
#endif
+#ifdef PCDSTOP /* solaris */
{ PCDSTOP, "PCDSTOP", "post stop request" },
+#endif
{ PCKILL, "PCKILL", "post a signal" },
+#ifdef PCNICE /* solaris */
{ PCNICE, "PCNICE", "set nice priority" },
+#endif
#ifdef PCREAD /* solaris */
{ PCREAD, "PCREAD", "read from the address space" },
{ PCWRITE, "PCWRITE", "write to the address space" },
-#endif
-#ifdef PCRESET /* unixware */
- { PCRESET, "PCRESET", "unset modes" },
#endif
{ PCRUN, "PCRUN", "make process/lwp runnable" },
#ifdef PCSASRS /* solaris 2.7 only */
{ PCSEXIT, "PCSEXIT", "set traced syscall exit set" },
{ PCSFAULT, "PCSFAULT", "set traced fault set" },
{ PCSFPREG, "PCSFPREG", "set floating point registers" },
+#ifdef PCSHOLD /* solaris */
{ PCSHOLD, "PCSHOLD", "set signal mask" },
+#endif
{ PCSREG, "PCSREG", "set general registers" },
{ PCSSIG, "PCSSIG", "set current signal" },
{ PCSTOP, "PCSTOP", "post stop request and wait" },
#ifdef PCTWSTOP /* solaris */
{ PCTWSTOP, "PCTWSTOP", "wait for stop, with timeout arg" },
#endif
+#ifdef PCUNKILL /* solaris */
{ PCUNKILL, "PCUNKILL", "delete a pending signal" },
+#endif
#ifdef PCUNSET /* solaris */
{ PCUNSET, "PCUNSET", "unset modes" },
#endif
static off_t lseek_offset;
int
-write_with_trace (fd, arg, len, file, line)
- int fd;
- long *arg;
- size_t len;
- char *file;
- int line;
+write_with_trace (int fd, void *varg, size_t len, char *file, int line)
{
- int i;
+ int i = ARRAY_SIZE (rw_table) - 1;
int ret;
- long opcode = arg[0];
+ procfs_ctl_t *arg = (procfs_ctl_t *) varg;
+ prepare_to_trace ();
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
+ procfs_ctl_t opcode = arg[0];
for (i = 0; rw_table[i].name != NULL; i++)
if (rw_table[i].value == opcode)
break;
case PCUNSET:
#endif
#ifdef PCRESET
+#if PCRESET != PCUNSET
case PCRESET:
+#endif
#endif
fprintf (procfs_file ? procfs_file : stdout,
"write (PCRESET, %s) %s\n",
proc_prettyfprint_syscalls (procfs_file ? procfs_file : stdout,
(sysset_t *) &arg[1], 0);
break;
+#ifdef PCSHOLD
case PCSHOLD:
fprintf (procfs_file ? procfs_file : stdout,
"write (PCSHOLD) ");
proc_prettyfprint_signalset (procfs_file ? procfs_file : stdout,
(sigset_t *) &arg[1], 0);
break;
+#endif
case PCSSIG:
fprintf (procfs_file ? procfs_file : stdout,
"write (PCSSIG) ");
fprintf (procfs_file ? procfs_file : stdout, "clearFlt ");
if (arg[1] & PRSTEP)
fprintf (procfs_file ? procfs_file : stdout, "step ");
+#ifdef PRSABORT
if (arg[1] & PRSABORT)
fprintf (procfs_file ? procfs_file : stdout, "syscallAbort ");
+#endif
+#ifdef PRSTOP
if (arg[1] & PRSTOP)
fprintf (procfs_file ? procfs_file : stdout, "stopReq ");
+#endif
fprintf (procfs_file ? procfs_file : stdout, "\n");
break;
break;
default:
{
- static unsigned char break_insn[] = BREAKPOINT;
-
- if (len == sizeof (break_insn) &&
- memcmp (arg, &break_insn, len) == 0)
- fprintf (procfs_file ? procfs_file : stdout,
- "write (<breakpoint at 0x%08lx>) \n",
- (unsigned long) lseek_offset);
- else if (rw_table[i].name)
+ if (rw_table[i].name)
fprintf (procfs_file ? procfs_file : stdout,
"write (%s) %s\n",
rw_table[i].name,
if (procfs_file)
fflush (procfs_file);
}
+ errno = 0;
ret = write (fd, (void *) arg, len);
if (procfs_trace && ret != len)
{
fprintf (procfs_file ? procfs_file : stdout,
- "[write (%s) FAILED!\n",
+ "[write (%s) FAILED! (%s)]\n",
rw_table[i].name != NULL ?
- rw_table[i].name : "<unknown>");
+ rw_table[i].name : "<unknown>",
+ safe_strerror (errno));
if (procfs_file)
fflush (procfs_file);
}
}
off_t
-lseek_with_trace (fd, offset, whence, file, line)
- int fd;
- off_t offset;
- int whence;
- char *file;
- int line;
+lseek_with_trace (int fd, off_t offset, int whence, char *file, int line)
{
off_t ret;
-#if 0 /* don't need output, just need address */
- if (procfs_trace)
- {
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
- if (info_verbose)
- fprintf (procfs_file ? procfs_file : stdout,
- "%s:%d -- ", file, line);
- fprintf (procfs_file ? procfs_file : stdout,
- "lseek (0x%08x, %s) \n", offset,
- whence == SEEK_SET ? "SEEK_SET" :
- whence == SEEK_CUR ? "SEEK_CUR" :
- whence == SEEK_END ? "SEEK_END" :
- "<unknown whence>");
- if (procfs_file)
- fflush (procfs_file);
- }
-#endif
+ prepare_to_trace ();
+ errno = 0;
ret = lseek (fd, offset, whence);
lseek_offset = ret;
- if (procfs_trace && ret == -1)
+ if (procfs_trace && (ret == -1 || errno != 0))
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
fprintf (procfs_file ? procfs_file : stdout,
- "[lseek (0x%08lx) FAILED!\n", (unsigned long) offset);
+ "[lseek (0x%08lx) FAILED! (%s)]\n",
+ (unsigned long) offset, safe_strerror (errno));
if (procfs_file)
fflush (procfs_file);
}
#endif /* NEW_PROC_API */
int
-open_with_trace (filename, mode, file, line)
- char *filename;
- int mode;
- char *file;
- int line;
+open_with_trace (char *filename, int mode, char *file, int line)
{
- int ret = open (filename, mode);
+ int ret;
+ prepare_to_trace ();
+ errno = 0;
+ ret = open (filename, mode);
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
if (info_verbose)
fprintf (procfs_file ? procfs_file : stdout,
"%s:%d -- ", file, line);
- fprintf (procfs_file ? procfs_file : stdout,
- "%d = open (%s, ", ret, filename);
- if (mode == O_RDONLY)
- fprintf (procfs_file ? procfs_file : stdout, "O_RDONLY) %d\n", line);
- else if (mode == O_WRONLY)
- fprintf (procfs_file ? procfs_file : stdout, "O_WRONLY) %d\n", line);
- else if (mode == O_RDWR)
- fprintf (procfs_file ? procfs_file : stdout, "O_RDWR) %d\n", line);
+
+ if (errno)
+ {
+ fprintf (procfs_file ? procfs_file : stdout,
+ "[open FAILED! (%s) line %d]\\n",
+ safe_strerror (errno), line);
+ }
+ else
+ {
+ fprintf (procfs_file ? procfs_file : stdout,
+ "%d = open (%s, ", ret, filename);
+ if (mode == O_RDONLY)
+ fprintf (procfs_file ? procfs_file : stdout, "O_RDONLY) %d\n",
+ line);
+ else if (mode == O_WRONLY)
+ fprintf (procfs_file ? procfs_file : stdout, "O_WRONLY) %d\n",
+ line);
+ else if (mode == O_RDWR)
+ fprintf (procfs_file ? procfs_file : stdout, "O_RDWR) %d\n",
+ line);
+ }
if (procfs_file)
fflush (procfs_file);
}
}
int
-close_with_trace (fd, file, line)
- int fd;
- char *file;
- int line;
+close_with_trace (int fd, char *file, int line)
{
- int ret = close (fd);
+ int ret;
+ prepare_to_trace ();
+ errno = 0;
+ ret = close (fd);
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
if (info_verbose)
fprintf (procfs_file ? procfs_file : stdout,
"%s:%d -- ", file, line);
- fprintf (procfs_file ? procfs_file : stdout,
- "%d = close (%d)\n", ret, fd);
+ if (errno)
+ fprintf (procfs_file ? procfs_file : stdout,
+ "[close FAILED! (%s)]\n", safe_strerror (errno));
+ else
+ fprintf (procfs_file ? procfs_file : stdout,
+ "%d = close (%d)\n", ret, fd);
if (procfs_file)
fflush (procfs_file);
}
return ret;
}
-int
-wait_with_trace (wstat, file, line)
- int *wstat;
- char *file;
- int line;
+pid_t
+wait_with_trace (int *wstat, char *file, int line)
{
int ret, lstat = 0;
+ prepare_to_trace ();
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
if (info_verbose)
fprintf (procfs_file ? procfs_file : stdout,
"%s:%d -- ", file, line);
if (procfs_file)
fflush (procfs_file);
}
+ errno = 0;
ret = wait (&lstat);
if (procfs_trace)
{
- fprintf (procfs_file ? procfs_file : stdout,
- "returned pid %d, status 0x%x\n", ret, lstat);
+ if (errno)
+ fprintf (procfs_file ? procfs_file : stdout,
+ "[wait FAILED! (%s)]\n", safe_strerror (errno));
+ else
+ fprintf (procfs_file ? procfs_file : stdout,
+ "returned pid %d, status 0x%x\n", ret, lstat);
if (procfs_file)
fflush (procfs_file);
}
}
void
-procfs_note (msg, file, line)
- char *msg;
- char *file;
- int line;
+procfs_note (char *msg, char *file, int line)
{
+ prepare_to_trace ();
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
if (info_verbose)
fprintf (procfs_file ? procfs_file : stdout,
"%s:%d -- ", file, line);
- fprintf (procfs_file ? procfs_file : stdout, msg);
+ fprintf (procfs_file ? procfs_file : stdout, "%s", msg);
if (procfs_file)
fflush (procfs_file);
}
}
void
-proc_prettyfprint_status (flags, why, what, thread)
- long flags;
- int why;
- int what;
- int thread;
+proc_prettyfprint_status (long flags, int why, int what, int thread)
{
+ prepare_to_trace ();
if (procfs_trace)
{
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-
if (thread)
fprintf (procfs_file ? procfs_file : stdout,
"Thread %d: ", thread);
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern void _initialize_proc_api (void);
+
void
-_initialize_proc_api ()
+_initialize_proc_api (void)
{
struct cmd_list_element *c;
- c = add_set_cmd ("procfs-trace", no_class,
- var_boolean, (char *) &procfs_trace,
- "Set tracing for /proc ioctl calls.\n", &setlist);
-
- add_show_from_set (c, &showlist);
- c->function.sfunc = set_procfs_trace_cmd;
-
- c = add_set_cmd ("procfs-file", no_class, var_filename,
- (char *) &procfs_filename,
- "Set filename for /proc tracefile.\n", &setlist);
-
- add_show_from_set (c, &showlist);
- c->function.sfunc = set_procfs_file_cmd;
-
-#ifdef TRACE_PROCFS
- if (procfs_file == NULL && procfs_filename != NULL)
- procfs_file = fopen (procfs_filename, "a");
-#endif
+ add_setshow_boolean_cmd ("procfs-trace", no_class, &procfs_trace, _("\
+Set tracing for /proc api calls."), _("\
+Show tracing for /proc api calls."), NULL,
+ set_procfs_trace_cmd,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_filename_cmd ("procfs-file", no_class, &procfs_filename, _("\
+Set filename for /proc tracefile."), _("\
+Show filename for /proc tracefile."), NULL,
+ set_procfs_file_cmd,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
}
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