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* configure.ac: Check for pread and pwrite. 

* hostio.c (handle_pread): Fall back to lseek and read.
	(handle_pwrite): Fall back to lseek and write.
	* config.in, configure: Regenerated.
This commit is contained in:
Daniel Jacobowitz 2007-12-16 21:50:05 +00:00
parent c244f7a6ff
commit 4e79934594
5 changed files with 29 additions and 2 deletions
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7
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,10 @@
2007-12-16 Daniel Jacobowitz <dan@codesourcery.com>
* configure.ac: Check for pread and pwrite.
* hostio.c (handle_pread): Fall back to lseek and read.
(handle_pwrite): Fall back to lseek and write.
* config.in, configure: Regenerated.
2007-12-07 Daniel Jacobowitz <dan@codesourcery.com>
* server.c (myresume): Add own_buf argument.

6
gdb/gdbserver/config.in
View File

@ -53,6 +53,9 @@
/* Define to 1 if you have the <netinet/tcp.h> header file. */
#undef HAVE_NETINET_TCP_H
/* Define to 1 if you have the `pread' function. */
#undef HAVE_PREAD
/* Define to 1 if you have the `pread64' function. */
#undef HAVE_PREAD64
@ -72,6 +75,9 @@
/* Define if the target supports PTRACE_GETREGS for register access. */
#undef HAVE_PTRACE_GETREGS
/* Define to 1 if you have the `pwrite' function. */
#undef HAVE_PWRITE
/* Define to 1 if you have the <sgtty.h> header file. */
#undef HAVE_SGTTY_H

4
gdb/gdbserver/configure vendored
View File

@ -3099,7 +3099,9 @@ fi
done
for ac_func in pread64
for ac_func in pread pwrite pread64
do
as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
echo "$as_me:$LINENO: checking for $ac_func" >&5

2
gdb/gdbserver/configure.ac
View File

@ -41,7 +41,7 @@ AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
errno.h fcntl.h signal.h sys/file.h malloc.h dnl
sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
netinet/tcp.h arpa/inet.h sys/wait.h)
AC_CHECK_FUNCS(pread64)
AC_CHECK_FUNCS(pread pwrite pread64)
have_errno=no
AC_MSG_CHECKING(for errno)

12
gdb/gdbserver/hostio.c
View File

@ -377,7 +377,13 @@ handle_pread (char *own_buf, int *new_packet_len)
}
data = malloc (len);
#ifdef HAVE_PREAD
ret = pread (fd, data, len, offset);
#else
ret = lseek (fd, offset, SEEK_SET);
if (ret != -1)
ret = read (fd, data, len);
#endif
if (ret == -1)
{
@ -419,7 +425,13 @@ handle_pwrite (char *own_buf, int packet_len)
return;
}
#ifdef HAVE_PWRITE
ret = pwrite (fd, data, len, offset);
#else
ret = lseek (fd, offset, SEEK_SET);
if (ret != -1)
ret = write (fd, data, len);
#endif
if (ret == -1)
{