/* Remote File-I/O communications
- Copyright 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2015 Free Software Foundation, Inc.
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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* See the GDB User Guide for details of the GDB remote protocol. */
+/* See the GDB User Guide for details of the GDB remote protocol. */
#include "defs.h"
-#include "gdb_string.h"
#include "gdbcmd.h"
#include "remote.h"
-#include "gdb/fileio.h"
#include "gdb_wait.h"
-#include "gdb_stat.h"
+#include <sys/stat.h>
+#include "remote-fileio.h"
+#include "event-loop.h"
+#include "target.h"
+#include "filenames.h"
+#include "filestuff.h"
#include <fcntl.h>
-#include <sys/time.h>
+#include "gdb_sys_time.h"
#ifdef __CYGWIN__
-#include <sys/cygwin.h> /* For cygwin_conv_to_full_posix_path. */
+#include <sys/cygwin.h> /* For cygwin_conv_path. */
#endif
#include <signal.h>
static int remote_fio_system_call_allowed = 0;
+static struct async_signal_handler *sigint_fileio_token;
+
static int
-remote_fileio_init_fd_map ()
+remote_fileio_init_fd_map (void)
{
int i;
if (!remote_fio_data.fd_map)
{
- remote_fio_data.fd_map = (int *) xmalloc (10 * sizeof (int));
+ remote_fio_data.fd_map = XNEWVEC (int, 10);
remote_fio_data.fd_map_size = 10;
remote_fio_data.fd_map[0] = FIO_FD_CONSOLE_IN;
remote_fio_data.fd_map[1] = FIO_FD_CONSOLE_OUT;
}
static int
-remote_fileio_resize_fd_map ()
+remote_fileio_resize_fd_map (void)
{
+ int i = remote_fio_data.fd_map_size;
+
if (!remote_fio_data.fd_map)
return remote_fileio_init_fd_map ();
remote_fio_data.fd_map_size += 10;
remote_fio_data.fd_map =
(int *) xrealloc (remote_fio_data.fd_map,
remote_fio_data.fd_map_size * sizeof (int));
+ for (; i < remote_fio_data.fd_map_size; i++)
+ remote_fio_data.fd_map[i] = FIO_FD_INVALID;
return remote_fio_data.fd_map_size - 10;
}
static int
-remote_fileio_next_free_fd ()
+remote_fileio_next_free_fd (void)
{
int i;
remote_fileio_fd_to_targetfd (int fd)
{
int target_fd = remote_fileio_next_free_fd ();
+
remote_fio_data.fd_map[target_fd] = fd;
return target_fd;
}
if (flags & FILEIO_O_RDWR)
hflags |= O_RDWR;
/* On systems supporting binary and text mode, always open files in
- binary mode. */
+ binary mode. */
#ifdef O_BINARY
hflags |= O_BINARY;
#endif
hmode |= S_IWUSR;
if (mode & FILEIO_S_IXUSR)
hmode |= S_IXUSR;
+#ifdef S_IRGRP
if (mode & FILEIO_S_IRGRP)
hmode |= S_IRGRP;
+#endif
+#ifdef S_IWGRP
if (mode & FILEIO_S_IWGRP)
hmode |= S_IWGRP;
+#endif
+#ifdef S_IXGRP
if (mode & FILEIO_S_IXGRP)
hmode |= S_IXGRP;
+#endif
if (mode & FILEIO_S_IROTH)
hmode |= S_IROTH;
+#ifdef S_IWOTH
if (mode & FILEIO_S_IWOTH)
hmode |= S_IWOTH;
+#endif
+#ifdef S_IXOTH
if (mode & FILEIO_S_IXOTH)
hmode |= S_IXOTH;
+#endif
return hmode;
}
-static long long
-remote_fileio_mode_to_target (mode_t mode)
-{
- mode_t tmode = 0;
-
- if (mode & S_IFREG)
- tmode |= FILEIO_S_IFREG;
- if (mode & S_IFDIR)
- tmode |= FILEIO_S_IFDIR;
- if (mode & S_IFCHR)
- tmode |= FILEIO_S_IFCHR;
- if (mode & S_IRUSR)
- tmode |= FILEIO_S_IRUSR;
- if (mode & S_IWUSR)
- tmode |= FILEIO_S_IWUSR;
- if (mode & S_IXUSR)
- tmode |= FILEIO_S_IXUSR;
- if (mode & S_IRGRP)
- tmode |= FILEIO_S_IRGRP;
- if (mode & S_IWGRP)
- tmode |= FILEIO_S_IWGRP;
- if (mode & S_IXGRP)
- tmode |= FILEIO_S_IXGRP;
- if (mode & S_IROTH)
- tmode |= FILEIO_S_IROTH;
- if (mode & S_IWOTH)
- tmode |= FILEIO_S_IWOTH;
- if (mode & S_IXOTH)
- tmode |= FILEIO_S_IXOTH;
- return tmode;
-}
-
-static int
-remote_fileio_errno_to_target (int error)
-{
- switch (error)
- {
- case EPERM:
- return FILEIO_EPERM;
- case ENOENT:
- return FILEIO_ENOENT;
- case EINTR:
- return FILEIO_EINTR;
- case EIO:
- return FILEIO_EIO;
- case EBADF:
- return FILEIO_EBADF;
- case EACCES:
- return FILEIO_EACCES;
- case EFAULT:
- return FILEIO_EFAULT;
- case EBUSY:
- return FILEIO_EBUSY;
- case EEXIST:
- return FILEIO_EEXIST;
- case ENODEV:
- return FILEIO_ENODEV;
- case ENOTDIR:
- return FILEIO_ENOTDIR;
- case EISDIR:
- return FILEIO_EISDIR;
- case EINVAL:
- return FILEIO_EINVAL;
- case ENFILE:
- return FILEIO_ENFILE;
- case EMFILE:
- return FILEIO_EMFILE;
- case EFBIG:
- return FILEIO_EFBIG;
- case ENOSPC:
- return FILEIO_ENOSPC;
- case ESPIPE:
- return FILEIO_ESPIPE;
- case EROFS:
- return FILEIO_EROFS;
- case ENOSYS:
- return FILEIO_ENOSYS;
- case ENAMETOOLONG:
- return FILEIO_ENAMETOOLONG;
- }
- return FILEIO_EUNKNOWN;
-}
-
static int
remote_fileio_seek_flag_to_host (long num, int *flag)
{
}
static int
-remote_fileio_extract_long (char **buf, long long *retlong)
+remote_fileio_extract_long (char **buf, LONGEST *retlong)
{
char *c;
int sign = 1;
remote_fileio_extract_int (char **buf, long *retint)
{
int ret;
- long long retlong;
+ LONGEST retlong;
if (!retint)
return -1;
- if (!(ret = remote_fileio_extract_long (buf, &retlong)))
+ ret = remote_fileio_extract_long (buf, &retlong);
+ if (!ret)
*retint = (long) retlong;
return ret;
}
remote_fileio_extract_ptr_w_len (char **buf, CORE_ADDR *ptrval, int *length)
{
char *c;
- long long retlong;
+ LONGEST retlong;
if (!buf || !*buf || !**buf || !ptrval || !length)
return -1;
return 0;
}
-/* Convert to big endian */
-static void
-remote_fileio_to_be (long long num, char *buf, int bytes)
-{
- int i;
-
- for (i = 0; i < bytes; ++i)
- buf[i] = (num >> (8 * (bytes - i - 1))) & 0xff;
-}
-
-static void
-remote_fileio_to_fio_int (long num, fio_int_t fnum)
-{
- remote_fileio_to_be ((long long) num, (char *) fnum, 4);
-}
-
-static void
-remote_fileio_to_fio_uint (long num, fio_uint_t fnum)
-{
- remote_fileio_to_be ((long long) num, (char *) fnum, 4);
-}
-
-static void
-remote_fileio_to_fio_mode (mode_t num, fio_mode_t fnum)
-{
- remote_fileio_to_be (remote_fileio_mode_to_target(num), (char *) fnum, 4);
-}
-
-static void
-remote_fileio_to_fio_time (time_t num, fio_time_t fnum)
-{
- remote_fileio_to_be ((long long) num, (char *) fnum, 4);
-}
-
-static void
-remote_fileio_to_fio_long (long long num, fio_long_t fnum)
-{
- remote_fileio_to_be (num, (char *) fnum, 8);
-}
-
-static void
-remote_fileio_to_fio_ulong (long long num, fio_ulong_t fnum)
-{
- remote_fileio_to_be (num, (char *) fnum, 8);
-}
-
static void
-remote_fileio_to_fio_stat (struct stat *st, struct fio_stat *fst)
+remote_fileio_to_fio_long (LONGEST num, fio_long_t fnum)
{
- /* `st_dev' is set in the calling function */
- remote_fileio_to_fio_uint ((long) st->st_ino, fst->fst_ino);
- remote_fileio_to_fio_mode (st->st_mode, fst->fst_mode);
- remote_fileio_to_fio_uint ((long) st->st_nlink, fst->fst_nlink);
- remote_fileio_to_fio_uint ((long) st->st_uid, fst->fst_uid);
- remote_fileio_to_fio_uint ((long) st->st_gid, fst->fst_gid);
- remote_fileio_to_fio_uint ((long) st->st_rdev, fst->fst_rdev);
- remote_fileio_to_fio_ulong ((long long) st->st_size, fst->fst_size);
- remote_fileio_to_fio_ulong ((long long) st->st_blksize, fst->fst_blksize);
- remote_fileio_to_fio_ulong ((long long) st->st_blocks, fst->fst_blocks);
- remote_fileio_to_fio_time (st->st_atime, fst->fst_atime);
- remote_fileio_to_fio_time (st->st_mtime, fst->fst_mtime);
- remote_fileio_to_fio_time (st->st_ctime, fst->fst_ctime);
+ host_to_bigendian (num, (char *) fnum, 8);
}
static void
remote_fileio_to_fio_timeval (struct timeval *tv, struct fio_timeval *ftv)
{
- remote_fileio_to_fio_time (tv->tv_sec, ftv->ftv_sec);
+ host_to_fileio_time (tv->tv_sec, ftv->ftv_sec);
remote_fileio_to_fio_long (tv->tv_usec, ftv->ftv_usec);
}
#endif
static void
-remote_fileio_sig_init ()
+remote_fileio_sig_init (void)
{
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
remote_fio_sa.sa_handler = SIG_IGN;
}
static void
-remote_fileio_sig_exit ()
+remote_fileio_sig_exit (void)
{
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
sigaction (SIGINT, &remote_fio_osa, NULL);
#endif
}
+static void
+async_remote_fileio_interrupt (gdb_client_data arg)
+{
+ quit ();
+}
+
static void
remote_fileio_ctrl_c_signal_handler (int signo)
{
remote_fileio_sig_set (SIG_IGN);
remote_fio_ctrl_c_flag = 1;
if (!remote_fio_no_longjmp)
- throw_exception (RETURN_QUIT);
+ gdb_call_async_signal_handler (sigint_fileio_token, 1);
remote_fileio_sig_set (remote_fileio_ctrl_c_signal_handler);
}
}
static void
-remote_fileio_ioerror ()
+remote_fileio_ioerror (void)
{
remote_fileio_reply (-1, FILEIO_EIO);
}
static void
-remote_fileio_badfd ()
+remote_fileio_badfd (void)
{
remote_fileio_reply (-1, FILEIO_EBADF);
}
static void
remote_fileio_return_errno (int retcode)
{
- remote_fileio_reply (retcode,
- retcode < 0 ? remote_fileio_errno_to_target (errno) : 0);
+ remote_fileio_reply (retcode, retcode < 0
+ ? host_to_fileio_error (errno) : 0);
}
static void
remote_fileio_reply (retcode, 0);
}
-/* Wrapper function for remote_write_bytes() which has the disadvantage to
- write only one packet, regardless of the requested number of bytes to
- transfer. This wrapper calls remote_write_bytes() as often as needed. */
-static int
-remote_fileio_write_bytes (CORE_ADDR memaddr, char *myaddr, int len)
-{
- int ret = 0, written;
-
- while (len > 0 && (written = remote_write_bytes (memaddr, myaddr, len)) > 0)
- {
- len -= written;
- memaddr += written;
- myaddr += written;
- ret += written;
- }
- return ret;
-}
-
static void
remote_fileio_func_open (char *buf)
{
CORE_ADDR ptrval;
- int length, retlength;
+ int length;
long num;
int flags, fd;
mode_t mode;
char *pathname;
struct stat st;
- /* 1. Parameter: Ptr to pathname / length incl. trailing zero */
+ /* 1. Parameter: Ptr to pathname / length incl. trailing zero. */
if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
{
remote_fileio_ioerror ();
}
mode = remote_fileio_mode_to_host (num, 1);
- /* Request pathname using 'm' packet */
+ /* Request pathname. */
pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
- if (retlength != length)
+ if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0)
{
remote_fileio_ioerror ();
return;
/* Check if pathname exists and is not a regular file or directory. If so,
return an appropriate error code. Same for trying to open directories
- for writing. */
+ for writing. */
if (!stat (pathname, &st))
{
if (!S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
}
remote_fio_no_longjmp = 1;
- fd = open (pathname, flags, mode);
+ fd = gdb_open_cloexec (pathname, flags, mode);
if (fd < 0)
{
remote_fileio_return_errno (-1);
remote_fileio_ioerror ();
return;
}
- if ((fd = remote_fileio_map_fd ((int) num)) == FIO_FD_INVALID)
+ fd = remote_fileio_map_fd ((int) num);
+ if (fd == FIO_FD_INVALID)
{
remote_fileio_badfd ();
return;
remote_fileio_func_read (char *buf)
{
long target_fd, num;
- long long lnum;
+ LONGEST lnum;
CORE_ADDR ptrval;
- int fd, ret, retlength;
- char *buffer;
+ int fd, ret;
+ gdb_byte *buffer;
size_t length;
off_t old_offset, new_offset;
remote_fileio_ioerror ();
return;
}
- if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
+ fd = remote_fileio_map_fd ((int) target_fd);
+ if (fd == FIO_FD_INVALID)
{
remote_fileio_badfd ();
return;
static char *remaining_buf = NULL;
static int remaining_length = 0;
- buffer = (char *) xmalloc (32768);
+ buffer = (gdb_byte *) xmalloc (16384);
if (remaining_buf)
{
remote_fio_no_longjmp = 1;
}
else
{
- ret = ui_file_read (gdb_stdtargin, buffer, 32767);
+ /* Windows (at least XP and Server 2003) has difficulty
+ with large reads from consoles. If a handle is
+ backed by a real console device, overly large reads
+ from the handle will fail and set errno == ENOMEM.
+ On a Windows Server 2003 system where I tested,
+ reading 26608 bytes from the console was OK, but
+ anything above 26609 bytes would fail. The limit has
+ been observed to vary on different systems. So, we
+ limit this read to something smaller than that - by a
+ safe margin, in case the limit depends on system
+ resources or version. */
+ ret = ui_file_read (gdb_stdtargin, (char *) buffer, 16383);
remote_fio_no_longjmp = 1;
if (ret > 0 && (size_t)ret > length)
{
}
break;
default:
- buffer = (char *) xmalloc (length);
+ buffer = (gdb_byte *) xmalloc (length);
/* POSIX defines EINTR behaviour of read in a weird way. It's allowed
for read() to return -1 even if "some" bytes have been read. It
has been corrected in SUSv2 but that doesn't help us much...
{
new_offset = lseek (fd, 0, SEEK_CUR);
/* If some data has been read, return the number of bytes read.
- The Ctrl-C flag is set in remote_fileio_reply() anyway */
+ The Ctrl-C flag is set in remote_fileio_reply() anyway. */
if (old_offset != new_offset)
ret = new_offset - old_offset;
}
if (ret > 0)
{
- retlength = remote_fileio_write_bytes (ptrval, buffer, ret);
- if (retlength != ret)
- ret = -1; /* errno has been set to EIO in remote_fileio_write_bytes() */
+ errno = target_write_memory (ptrval, buffer, ret);
+ if (errno != 0)
+ ret = -1;
}
if (ret < 0)
remote_fileio_func_write (char *buf)
{
long target_fd, num;
- long long lnum;
+ LONGEST lnum;
CORE_ADDR ptrval;
- int fd, ret, retlength;
- char *buffer;
+ int fd, ret;
+ gdb_byte *buffer;
size_t length;
/* 1. Parameter: file descriptor */
remote_fileio_ioerror ();
return;
}
- if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
+ fd = remote_fileio_map_fd ((int) target_fd);
+ if (fd == FIO_FD_INVALID)
{
remote_fileio_badfd ();
return;
}
length = (size_t) num;
- buffer = (char *) xmalloc (length);
- retlength = remote_read_bytes (ptrval, buffer, length);
- if (retlength != length)
+ buffer = (gdb_byte *) xmalloc (length);
+ if (target_read_memory (ptrval, buffer, length) != 0)
{
xfree (buffer);
remote_fileio_ioerror ();
{
case FIO_FD_CONSOLE_IN:
remote_fileio_badfd ();
+ xfree (buffer);
return;
case FIO_FD_CONSOLE_OUT:
- ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr, buffer,
- length);
+ ui_file_write (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr,
+ (char *) buffer, length);
gdb_flush (target_fd == 1 ? gdb_stdtarg : gdb_stdtargerr);
ret = length;
break;
default:
ret = write (fd, buffer, length);
if (ret < 0 && errno == EACCES)
- errno = EBADF; /* Cygwin returns EACCESS when writing to a R/O file.*/
+ errno = EBADF; /* Cygwin returns EACCESS when writing to a
+ R/O file. */
break;
}
remote_fileio_func_lseek (char *buf)
{
long num;
- long long lnum;
+ LONGEST lnum;
int fd, flag;
off_t offset, ret;
remote_fileio_ioerror ();
return;
}
- if ((fd = remote_fileio_map_fd ((int) num)) == FIO_FD_INVALID)
+ fd = remote_fileio_map_fd ((int) num);
+ if (fd == FIO_FD_INVALID)
{
remote_fileio_badfd ();
return;
static void
remote_fileio_func_rename (char *buf)
{
- CORE_ADDR ptrval;
- int length, retlength;
+ CORE_ADDR old_ptr, new_ptr;
+ int old_len, new_len;
char *oldpath, *newpath;
int ret, of, nf;
struct stat ost, nst;
/* 1. Parameter: Ptr to oldpath / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+ if (remote_fileio_extract_ptr_w_len (&buf, &old_ptr, &old_len))
{
remote_fileio_ioerror ();
return;
}
- /* Request oldpath using 'm' packet */
- oldpath = alloca (length);
- retlength = remote_read_bytes (ptrval, oldpath, length);
- if (retlength != length)
+
+ /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
+ if (remote_fileio_extract_ptr_w_len (&buf, &new_ptr, &new_len))
{
remote_fileio_ioerror ();
return;
}
- /* 2. Parameter: Ptr to newpath / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+
+ /* Request oldpath using 'm' packet */
+ oldpath = alloca (old_len);
+ if (target_read_memory (old_ptr, (gdb_byte *) oldpath, old_len) != 0)
{
remote_fileio_ioerror ();
return;
}
+
/* Request newpath using 'm' packet */
- newpath = alloca (length);
- retlength = remote_read_bytes (ptrval, newpath, length);
- if (retlength != length)
+ newpath = alloca (new_len);
+ if (target_read_memory (new_ptr, (gdb_byte *) newpath, new_len) != 0)
{
remote_fileio_ioerror ();
return;
}
- /* Only operate on regular files and directories */
- if ((!(of = stat (oldpath, &ost))
- && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode))
- || (!(nf = stat (newpath, &nst))
- && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode)))
+ /* Only operate on regular files and directories. */
+ of = stat (oldpath, &ost);
+ nf = stat (newpath, &nst);
+ if ((!of && !S_ISREG (ost.st_mode) && !S_ISDIR (ost.st_mode))
+ || (!nf && !S_ISREG (nst.st_mode) && !S_ISDIR (nst.st_mode)))
{
remote_fileio_reply (-1, FILEIO_EACCES);
return;
{
/* Special case: newpath is a non-empty directory. Some systems
return ENOTEMPTY, some return EEXIST. We coerce that to be
- always EEXIST. */
+ always EEXIST. */
if (errno == ENOTEMPTY)
errno = EEXIST;
#ifdef __CYGWIN__
- /* Workaround some Cygwin problems with correct errnos. */
+ /* Workaround some Cygwin problems with correct errnos. */
if (errno == EACCES)
{
if (!of && !nf && S_ISDIR (nst.st_mode))
errno = EISDIR;
else
{
- char oldfullpath[PATH_MAX + 1];
- char newfullpath[PATH_MAX + 1];
+ char oldfullpath[PATH_MAX];
+ char newfullpath[PATH_MAX];
int len;
- cygwin_conv_to_full_posix_path (oldpath, oldfullpath);
- cygwin_conv_to_full_posix_path (newpath, newfullpath);
+ cygwin_conv_path (CCP_WIN_A_TO_POSIX, oldpath, oldfullpath,
+ PATH_MAX);
+ cygwin_conv_path (CCP_WIN_A_TO_POSIX, newpath, newfullpath,
+ PATH_MAX);
len = strlen (oldfullpath);
- if (newfullpath[len] == '/'
- && !strncmp (oldfullpath, newfullpath, len))
+ if (IS_DIR_SEPARATOR (newfullpath[len])
+ && !filename_ncmp (oldfullpath, newfullpath, len))
errno = EINVAL;
else
errno = EEXIST;
remote_fileio_func_unlink (char *buf)
{
CORE_ADDR ptrval;
- int length, retlength;
+ int length;
char *pathname;
int ret;
struct stat st;
}
/* Request pathname using 'm' packet */
pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
- if (retlength != length)
+ if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0)
{
remote_fileio_ioerror ();
return;
}
/* Only operate on regular files (and directories, which allows to return
- the correct return code) */
+ the correct return code). */
if (!stat (pathname, &st) && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
{
remote_fileio_reply (-1, FILEIO_ENODEV);
static void
remote_fileio_func_stat (char *buf)
{
- CORE_ADDR ptrval;
- int ret, length, retlength;
+ CORE_ADDR statptr, nameptr;
+ int ret, namelength;
char *pathname;
- long long lnum;
+ LONGEST lnum;
struct stat st;
struct fio_stat fst;
/* 1. Parameter: Ptr to pathname / length incl. trailing zero */
- if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
+ if (remote_fileio_extract_ptr_w_len (&buf, &nameptr, &namelength))
{
remote_fileio_ioerror ();
return;
}
- /* Request pathname using 'm' packet */
- pathname = alloca (length);
- retlength = remote_read_bytes (ptrval, pathname, length);
- if (retlength != length)
+
+ /* 2. Parameter: Ptr to struct stat */
+ if (remote_fileio_extract_long (&buf, &lnum))
{
remote_fileio_ioerror ();
return;
}
-
- /* 2. Parameter: Ptr to struct stat */
- if (remote_fileio_extract_long (&buf, &lnum))
+ statptr = (CORE_ADDR) lnum;
+
+ /* Request pathname using 'm' packet */
+ pathname = alloca (namelength);
+ if (target_read_memory (nameptr, (gdb_byte *) pathname, namelength) != 0)
{
remote_fileio_ioerror ();
return;
}
- ptrval = (CORE_ADDR) lnum;
remote_fio_no_longjmp = 1;
ret = stat (pathname, &st);
remote_fileio_return_errno (-1);
return;
}
- /* Only operate on regular files and directories */
+ /* Only operate on regular files and directories. */
if (!ret && !S_ISREG (st.st_mode) && !S_ISDIR (st.st_mode))
{
remote_fileio_reply (-1, FILEIO_EACCES);
return;
}
- if (ptrval)
+ if (statptr)
{
- remote_fileio_to_fio_stat (&st, &fst);
- remote_fileio_to_fio_uint (0, fst.fst_dev);
-
- retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
- if (retlength != sizeof fst)
+ host_to_fileio_stat (&st, &fst);
+ host_to_fileio_uint (0, fst.fst_dev);
+
+ errno = target_write_memory (statptr, (gdb_byte *) &fst, sizeof fst);
+ if (errno != 0)
{
remote_fileio_return_errno (-1);
return;
remote_fileio_func_fstat (char *buf)
{
CORE_ADDR ptrval;
- int fd, ret, retlength;
+ int fd, ret;
long target_fd;
- long long lnum;
+ LONGEST lnum;
struct stat st;
struct fio_stat fst;
struct timeval tv;
remote_fileio_ioerror ();
return;
}
- if ((fd = remote_fileio_map_fd ((int) target_fd)) == FIO_FD_INVALID)
+ fd = remote_fileio_map_fd ((int) target_fd);
+ if (fd == FIO_FD_INVALID)
{
remote_fileio_badfd ();
return;
remote_fio_no_longjmp = 1;
if (fd == FIO_FD_CONSOLE_IN || fd == FIO_FD_CONSOLE_OUT)
{
- remote_fileio_to_fio_uint (1, fst.fst_dev);
+ host_to_fileio_uint (1, fst.fst_dev);
+ memset (&st, 0, sizeof (st));
st.st_mode = S_IFCHR | (fd == FIO_FD_CONSOLE_IN ? S_IRUSR : S_IWUSR);
st.st_nlink = 1;
+#ifdef HAVE_GETUID
st.st_uid = getuid ();
+#endif
+#ifdef HAVE_GETGID
st.st_gid = getgid ();
- st.st_rdev = 0;
- st.st_size = 0;
+#endif
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
st.st_blksize = 512;
+#endif
+#if HAVE_STRUCT_STAT_ST_BLOCKS
st.st_blocks = 0;
+#endif
if (!gettimeofday (&tv, NULL))
st.st_atime = st.st_mtime = st.st_ctime = tv.tv_sec;
else
}
if (ptrval)
{
- remote_fileio_to_fio_stat (&st, &fst);
+ host_to_fileio_stat (&st, &fst);
- retlength = remote_fileio_write_bytes (ptrval, (char *) &fst, sizeof fst);
- if (retlength != sizeof fst)
+ errno = target_write_memory (ptrval, (gdb_byte *) &fst, sizeof fst);
+ if (errno != 0)
{
remote_fileio_return_errno (-1);
return;
static void
remote_fileio_func_gettimeofday (char *buf)
{
- long long lnum;
+ LONGEST lnum;
CORE_ADDR ptrval;
- int ret, retlength;
+ int ret;
struct timeval tv;
struct fio_timeval ftv;
return;
}
ptrval = (CORE_ADDR) lnum;
- /* 2. Parameter: some pointer value... */
+ /* 2. Parameter: some pointer value... */
if (remote_fileio_extract_long (&buf, &lnum))
{
remote_fileio_ioerror ();
return;
}
- /* ...which has to be NULL */
+ /* ...which has to be NULL. */
if (lnum)
{
remote_fileio_reply (-1, FILEIO_EINVAL);
{
remote_fileio_to_fio_timeval (&tv, &ftv);
- retlength = remote_fileio_write_bytes (ptrval, (char *) &ftv, sizeof ftv);
- if (retlength != sizeof ftv)
+ errno = target_write_memory (ptrval, (gdb_byte *) &ftv, sizeof ftv);
+ if (errno != 0)
{
remote_fileio_return_errno (-1);
return;
remote_fileio_func_system (char *buf)
{
CORE_ADDR ptrval;
- int ret, length, retlength;
- char *cmdline;
-
- /* Check if system(3) has been explicitely allowed using the
- `set remote system-call-allowed 1' command. If not, return
- EPERM */
- if (!remote_fio_system_call_allowed)
- {
- remote_fileio_reply (-1, FILEIO_EPERM);
- return;
- }
+ int ret, length;
+ char *cmdline = NULL;
/* Parameter: Ptr to commandline / length incl. trailing zero */
if (remote_fileio_extract_ptr_w_len (&buf, &ptrval, &length))
remote_fileio_ioerror ();
return;
}
- /* Request commandline using 'm' packet */
- cmdline = alloca (length);
- retlength = remote_read_bytes (ptrval, cmdline, length);
- if (retlength != length)
+
+ if (length)
{
- remote_fileio_ioerror ();
+ /* Request commandline using 'm' packet */
+ cmdline = alloca (length);
+ if (target_read_memory (ptrval, (gdb_byte *) cmdline, length) != 0)
+ {
+ remote_fileio_ioerror ();
+ return;
+ }
+ }
+
+ /* Check if system(3) has been explicitely allowed using the
+ `set remote system-call-allowed 1' command. If length is 0,
+ indicating a NULL parameter to the system call, return zero to
+ indicate a shell is not available. Otherwise fail with EPERM. */
+ if (!remote_fio_system_call_allowed)
+ {
+ if (!length)
+ remote_fileio_return_success (0);
+ else
+ remote_fileio_reply (-1, FILEIO_EPERM);
return;
}
remote_fio_no_longjmp = 1;
ret = system (cmdline);
- if (ret == -1)
+ if (!length)
+ remote_fileio_return_success (ret);
+ else if (ret == -1)
remote_fileio_return_errno (-1);
else
remote_fileio_return_success (WEXITSTATUS (ret));
char *name;
void (*func)(char *);
} remote_fio_func_map[] = {
- "open", remote_fileio_func_open,
- "close", remote_fileio_func_close,
- "read", remote_fileio_func_read,
- "write", remote_fileio_func_write,
- "lseek", remote_fileio_func_lseek,
- "rename", remote_fileio_func_rename,
- "unlink", remote_fileio_func_unlink,
- "stat", remote_fileio_func_stat,
- "fstat", remote_fileio_func_fstat,
- "gettimeofday", remote_fileio_func_gettimeofday,
- "isatty", remote_fileio_func_isatty,
- "system", remote_fileio_func_system,
- NULL, NULL
+ { "open", remote_fileio_func_open },
+ { "close", remote_fileio_func_close },
+ { "read", remote_fileio_func_read },
+ { "write", remote_fileio_func_write },
+ { "lseek", remote_fileio_func_lseek },
+ { "rename", remote_fileio_func_rename },
+ { "unlink", remote_fileio_func_unlink },
+ { "stat", remote_fileio_func_stat },
+ { "fstat", remote_fileio_func_fstat },
+ { "gettimeofday", remote_fileio_func_gettimeofday },
+ { "isatty", remote_fileio_func_isatty },
+ { "system", remote_fileio_func_system },
+ { NULL, NULL }
};
static int
for (idx = 0; remote_fio_func_map[idx].name; ++idx)
if (!strcmp (remote_fio_func_map[idx].name, buf))
break;
- if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */
+ if (!remote_fio_func_map[idx].name) /* ERROR: No such function. */
return RETURN_ERROR;
remote_fio_func_map[idx].func (c);
return 0;
}
+/* Close any open descriptors, and reinitialize the file mapping. */
+
void
-remote_fileio_request (char *buf)
+remote_fileio_reset (void)
+{
+ int ix;
+
+ for (ix = 0; ix != remote_fio_data.fd_map_size; ix++)
+ {
+ int fd = remote_fio_data.fd_map[ix];
+
+ if (fd >= 0)
+ close (fd);
+ }
+ if (remote_fio_data.fd_map)
+ {
+ xfree (remote_fio_data.fd_map);
+ remote_fio_data.fd_map = NULL;
+ remote_fio_data.fd_map_size = 0;
+ }
+}
+
+/* Handle a file I/O request. BUF points to the packet containing the
+ request. CTRLC_PENDING_P should be nonzero if the target has not
+ acknowledged the Ctrl-C sent asynchronously earlier. */
+
+void
+remote_fileio_request (char *buf, int ctrlc_pending_p)
{
int ex;
remote_fileio_sig_init ();
- remote_fio_ctrl_c_flag = 0;
- remote_fio_no_longjmp = 0;
-
- ex = catch_exceptions (uiout, do_remote_fileio_request, (void *)buf,
- NULL, RETURN_MASK_ALL);
- switch (ex)
+ if (ctrlc_pending_p)
{
- case RETURN_ERROR:
- remote_fileio_reply (-1, FILEIO_ENOSYS);
- break;
- case RETURN_QUIT:
- remote_fileio_reply (-1, FILEIO_EINTR);
- break;
- default:
- break;
+ /* If the target hasn't responded to the Ctrl-C sent
+ asynchronously earlier, take this opportunity to send the
+ Ctrl-C synchronously. */
+ remote_fio_ctrl_c_flag = 1;
+ remote_fio_no_longjmp = 0;
+ remote_fileio_reply (-1, FILEIO_EINTR);
+ }
+ else
+ {
+ remote_fio_ctrl_c_flag = 0;
+ remote_fio_no_longjmp = 0;
+
+ ex = catch_exceptions (current_uiout,
+ do_remote_fileio_request, (void *)buf,
+ RETURN_MASK_ALL);
+ switch (ex)
+ {
+ case RETURN_ERROR:
+ remote_fileio_reply (-1, FILEIO_ENOSYS);
+ break;
+ case RETURN_QUIT:
+ remote_fileio_reply (-1, FILEIO_EINTR);
+ break;
+ default:
+ break;
+ }
}
remote_fileio_sig_exit ();
}
+\f
+
+/* Unpack an fio_uint_t. */
+
+static unsigned int
+remote_fileio_to_host_uint (fio_uint_t fnum)
+{
+ return extract_unsigned_integer ((gdb_byte *) fnum, 4,
+ BFD_ENDIAN_BIG);
+}
+
+/* Unpack an fio_ulong_t. */
+
+static ULONGEST
+remote_fileio_to_host_ulong (fio_ulong_t fnum)
+{
+ return extract_unsigned_integer ((gdb_byte *) fnum, 8,
+ BFD_ENDIAN_BIG);
+}
+
+/* Unpack an fio_mode_t. */
+
+static mode_t
+remote_fileio_to_host_mode (fio_mode_t fnum)
+{
+ return remote_fileio_mode_to_host (remote_fileio_to_host_uint (fnum),
+ 0);
+}
+
+/* Unpack an fio_time_t. */
+
+static time_t
+remote_fileio_to_host_time (fio_time_t fnum)
+{
+ return remote_fileio_to_host_uint (fnum);
+}
+
+
+/* See remote-fileio.h. */
+
+void
+remote_fileio_to_host_stat (struct fio_stat *fst, struct stat *st)
+{
+ memset (st, 0, sizeof (struct stat));
+
+ st->st_dev = remote_fileio_to_host_uint (fst->fst_dev);
+ st->st_ino = remote_fileio_to_host_uint (fst->fst_ino);
+ st->st_mode = remote_fileio_to_host_mode (fst->fst_mode);
+ st->st_nlink = remote_fileio_to_host_uint (fst->fst_nlink);
+ st->st_uid = remote_fileio_to_host_uint (fst->fst_uid);
+ st->st_gid = remote_fileio_to_host_uint (fst->fst_gid);
+ st->st_rdev = remote_fileio_to_host_uint (fst->fst_rdev);
+ st->st_size = remote_fileio_to_host_ulong (fst->fst_size);
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+ st->st_blksize = remote_fileio_to_host_ulong (fst->fst_blksize);
+#endif
+#if HAVE_STRUCT_STAT_ST_BLOCKS
+ st->st_blocks = remote_fileio_to_host_ulong (fst->fst_blocks);
+#endif
+ st->st_atime = remote_fileio_to_host_time (fst->fst_atime);
+ st->st_mtime = remote_fileio_to_host_time (fst->fst_mtime);
+ st->st_ctime = remote_fileio_to_host_time (fst->fst_ctime);
+}
+\f
static void
set_system_call_allowed (char *args, int from_tty)
{
char *arg_end;
int val = strtoul (args, &arg_end, 10);
+
if (*args && *arg_end == '\0')
{
remote_fio_system_call_allowed = !!val;
return;
}
}
- error ("Illegal argument for \"set remote system-call-allowed\" command");
+ error (_("Illegal argument for \"set remote system-call-allowed\" command"));
}
static void
show_system_call_allowed (char *args, int from_tty)
{
if (args)
- error ("Garbage after \"show remote system-call-allowed\" command: `%s'", args);
+ error (_("Garbage after \"show remote "
+ "system-call-allowed\" command: `%s'"), args);
printf_unfiltered ("Calling host system(3) call from target is %sallowed\n",
remote_fio_system_call_allowed ? "" : "not ");
}
initialize_remote_fileio (struct cmd_list_element *remote_set_cmdlist,
struct cmd_list_element *remote_show_cmdlist)
{
+ sigint_fileio_token =
+ create_async_signal_handler (async_remote_fileio_interrupt, NULL);
+
add_cmd ("system-call-allowed", no_class,
set_system_call_allowed,
- "Set if the host system(3) call is allowed for the target.\n",
+ _("Set if the host system(3) call is allowed for the target."),
&remote_set_cmdlist);
add_cmd ("system-call-allowed", no_class,
show_system_call_allowed,
- "Show if the host system(3) call is allowed for the target.\n",
+ _("Show if the host system(3) call is allowed for the target."),
&remote_show_cmdlist);
}