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ChangeLog:

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* configure.ac [AC_CHECK_FUNCS]: Check for readlink.
	* config.in, configure: Regenerate.

	* target.h (struct target_ops): Add to_fileio_readlink.
	(target_fileio_readlink): Add prototype.
	* target.c (target_fileio_readlink): New function.

	* inf-child.c: Conditionally include <sys/param.h>.
	(inf_child_fileio_readlink): New function.
	(inf_child_target): Install it.

	* remote.c (PACKET_vFile_readlink): New enum value.
	(remote_hostio_readlink): New function.
	(init_remote_ops): Install it.
	(_initialize_remote): Handle vFile:readlink packet type.

doc/ChangeLog:

	* gdb.texinfo (Remote Configuration): Document
	"set remote hostio-readlink-packet" command.
	(General Query Packets): Document vFile:readlink packet.

gdbserver/ChangeLog:

	* hostio.c (handle_readlink): New function.
	(handle_vFile): Call it to handle "vFile:readlink" packets.
This commit is contained in:
Ulrich Weigand
2012-01-20 09:47:32 +00:00
parent 7313baad7c
commit b9e7b9c3de
12 changed files with 195 additions and 2 deletions
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43
gdb/remote.c
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@@ -1238,6 +1238,7 @@ enum {
PACKET_vFile_pwrite,
PACKET_vFile_close,
PACKET_vFile_unlink,
PACKET_vFile_readlink,
PACKET_qXfer_auxv,
PACKET_qXfer_features,
PACKET_qXfer_libraries,
@@ -9358,6 +9359,44 @@ remote_hostio_unlink (const char *filename, int *remote_errno)
remote_errno, NULL, NULL);
}
/* Read value of symbolic link FILENAME on the remote target. Return
a null-terminated string allocated via xmalloc, or NULL if an error
occurs (and set *REMOTE_ERRNO). */
static char *
remote_hostio_readlink (const char *filename, int *remote_errno)
{
struct remote_state *rs = get_remote_state ();
char *p = rs->buf;
char *attachment;
int left = get_remote_packet_size ();
int len, attachment_len;
int read_len;
char *ret;
remote_buffer_add_string (&p, &left, "vFile:readlink:");
remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename,
strlen (filename));
len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink,
remote_errno, &attachment,
&attachment_len);
if (len < 0)
return NULL;
ret = xmalloc (len + 1);
read_len = remote_unescape_input (attachment, attachment_len,
ret, len);
if (read_len != len)
error (_("Readlink returned %d, but %d bytes."), len, read_len);
ret[len] = '\0';
return ret;
}
static int
remote_fileio_errno_to_host (int errnum)
{
@@ -10679,6 +10718,7 @@ Specify the serial device it is connected to\n\
remote_ops.to_fileio_pread = remote_hostio_pread;
remote_ops.to_fileio_close = remote_hostio_close;
remote_ops.to_fileio_unlink = remote_hostio_unlink;
remote_ops.to_fileio_readlink = remote_hostio_readlink;
remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint;
remote_ops.to_supports_string_tracing = remote_supports_string_tracing;
remote_ops.to_trace_init = remote_trace_init;
@@ -11177,6 +11217,9 @@ Show the maximum size of the address (in bits) in a memory packet."), NULL,
add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink],
"vFile:unlink", "hostio-unlink", 0);
add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink],
"vFile:readlink", "hostio-readlink", 0);
add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach],
"vAttach", "attach", 0);