/* Default child (native) target interface, for GDB when running under
Unix.
- Copyright (C) 1988-1996, 1998-2002, 2004-2005, 2007-2012 Free
- Software Foundation, Inc.
+ Copyright (C) 1988-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "symtab.h"
#include "target.h"
#include "inferior.h"
-#include "gdb_string.h"
-#include "gdb_stat.h"
+#include <string.h>
+#include <sys/stat.h>
#include "inf-child.h"
#include "gdb/fileio.h"
+#include "agent.h"
+#include "gdb_wait.h"
+#include "filestuff.h"
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h> /* for MAXPATHLEN */
-#endif
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
+/* Helper function for child_wait and the derivatives of child_wait.
+ HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
+ translation of that in OURSTATUS. */
+void
+store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus)
+{
+ if (WIFEXITED (hoststatus))
+ {
+ ourstatus->kind = TARGET_WAITKIND_EXITED;
+ ourstatus->value.integer = WEXITSTATUS (hoststatus);
+ }
+ else if (!WIFSTOPPED (hoststatus))
+ {
+ ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+ ourstatus->value.sig = gdb_signal_from_host (WTERMSIG (hoststatus));
+ }
+ else
+ {
+ ourstatus->kind = TARGET_WAITKIND_STOPPED;
+ ourstatus->value.sig = gdb_signal_from_host (WSTOPSIG (hoststatus));
+ }
+}
+
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers. */
}
static int
-inf_child_follow_fork (struct target_ops *ops, int follow_child)
+inf_child_follow_fork (struct target_ops *ops, int follow_child,
+ int detach_fork)
{
/* This version of Unix doesn't support following fork or vfork
events. */
/* We do not need to convert MODE, since the fileio protocol uses
the standard values. */
- fd = open (filename, nat_flags, mode);
+ fd = gdb_open_cloexec (filename, nat_flags, mode);
if (fd == -1)
*target_errno = inf_child_errno_to_fileio_error (errno);
#ifdef HAVE_PWRITE
ret = pwrite (fd, write_buf, len, (long) offset);
#else
- ret = lseek (fd, (long) offset, SEEK_SET);
- if (ret != -1)
- ret = write (fd, write_buf, len);
+ ret = -1;
#endif
+ /* If we have no pwrite or it failed for this file, use lseek/write. */
+ if (ret == -1)
+ {
+ ret = lseek (fd, (long) offset, SEEK_SET);
+ if (ret != -1)
+ ret = write (fd, write_buf, len);
+ }
if (ret == -1)
*target_errno = inf_child_errno_to_fileio_error (errno);
#ifdef HAVE_PREAD
ret = pread (fd, read_buf, len, (long) offset);
#else
- ret = lseek (fd, (long) offset, SEEK_SET);
- if (ret != -1)
- ret = read (fd, read_buf, len);
+ ret = -1;
#endif
+ /* If we have no pread or it failed for this file, use lseek/read. */
+ if (ret == -1)
+ {
+ ret = lseek (fd, (long) offset, SEEK_SET);
+ if (ret != -1)
+ ret = read (fd, read_buf, len);
+ }
if (ret == -1)
*target_errno = inf_child_errno_to_fileio_error (errno);
inf_child_fileio_readlink (const char *filename, int *target_errno)
{
/* We support readlink only on systems that also provide a compile-time
- maximum path length (MAXPATHLEN), at least for now. */
-#if defined (HAVE_READLINK) && defined (MAXPATHLEN)
- char buf[MAXPATHLEN];
+ maximum path length (PATH_MAX), at least for now. */
+#if defined (HAVE_READLINK) && defined (PATH_MAX)
+ char buf[PATH_MAX];
int len;
char *ret;
#endif
}
+static int
+inf_child_use_agent (int use)
+{
+ if (agent_loaded_p ())
+ {
+ use_agent = use;
+ return 1;
+ }
+ else
+ return 0;
+}
+
+static int
+inf_child_can_use_agent (void)
+{
+ return agent_loaded_p ();
+}
struct target_ops *
inf_child_target (void)
t->to_fileio_unlink = inf_child_fileio_unlink;
t->to_fileio_readlink = inf_child_fileio_readlink;
t->to_magic = OPS_MAGIC;
+ t->to_use_agent = inf_child_use_agent;
+ t->to_can_use_agent = inf_child_can_use_agent;
return t;
}