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Implement -list-thread-groups --available

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* Makefile.in (XMLFILES): Add osdata.dtd.
        (SFILES): Add osdata.c.
        (COMMON_OBS): Add osdata.o.
        * linux-nat.c: Include pwd.h, sys/types.h, gdb_dirent.h and xml-support.h.
        (linux_nat_xfer_osdata): New function.
        (linux_xfer_partial): Handle TARGET_OBJECT_OSDATA.
        * osdata.c: New file.
        * osdata.h: New file.
        * remote.c (PACKET_qXfer_osdata): New packet enum.
        (remote_protocol_features): Add "qXfer:osdata:read".
        (remote_read_qxfer): Handle TARGET_OBJECT_OSDATA.
        (extended_remote_can_run): New.
        (init_extended_remote_ops): Set to_can_run to
        extended_remote_can_run.
        (_initialize_remote): Add packet config command for
        "qXfer:osdata:read".
        * xml-support.c (obstack_xml_printf): New function.
        * xml-support.h (obstack_xml_printf): Declare.
        * target.c (target_get_osdata): New function.
        * target.h (enum target_object): Add TARGET_OBJECT_OSDATA.
        (target_os_data): Declare.
        * features/osdata.dtd: New file.
        * mi/mi-main.c (mi_list_thread_groups): Handle the --available
        option.
This commit is contained in:
Vladimir Prus 2008-12-02 07:57:38 +00:00
parent f3c85de60a
commit 07e059b5a9
22 changed files with 1093 additions and 7 deletions
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115
gdb/linux-nat.c
View file

@ -49,6 +49,10 @@
#include "inf-loop.h"
#include "event-loop.h"
#include "event-top.h"
#include <pwd.h>
#include <sys/types.h>
#include "gdb_dirent.h"
#include "xml-support.h"
#ifdef HAVE_PERSONALITY
# include <sys/personality.h>
@ -3994,6 +3998,113 @@ linux_proc_pending_signals (int pid, sigset_t *pending, sigset_t *blocked, sigse
do_cleanups (cleanup);
}
static LONGEST
linux_nat_xfer_osdata (struct target_ops *ops, enum target_object object,
const char *annex, gdb_byte *readbuf,
const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
/* We make the process list snapshot when the object starts to be
read. */
static const char *buf;
static LONGEST len_avail = -1;
static struct obstack obstack;
DIR *dirp;
gdb_assert (object == TARGET_OBJECT_OSDATA);
if (strcmp (annex, "processes") != 0)
return 0;
gdb_assert (readbuf && !writebuf);
if (offset == 0)
{
if (len_avail != -1 && len_avail != 0)
obstack_free (&obstack, NULL);
len_avail = 0;
buf = NULL;
obstack_init (&obstack);
obstack_grow_str (&obstack, "<osdata type=\"processes\">\n");
dirp = opendir ("/proc");
if (dirp)
{
struct dirent *dp;
while ((dp = readdir (dirp)) != NULL)
{
struct stat statbuf;
char procentry[sizeof ("/proc/4294967295")];
if (!isdigit (dp->d_name[0])
|| strlen (dp->d_name) > sizeof ("4294967295") - 1)
continue;
sprintf (procentry, "/proc/%s", dp->d_name);
if (stat (procentry, &statbuf) == 0
&& S_ISDIR (statbuf.st_mode))
{
char *pathname;
FILE *f;
char cmd[MAXPATHLEN + 1];
struct passwd *entry;
pathname = xstrprintf ("/proc/%s/cmdline", dp->d_name);
entry = getpwuid (statbuf.st_uid);
if ((f = fopen (pathname, "r")) != NULL)
{
size_t len = fread (cmd, 1, sizeof (cmd) - 1, f);
if (len > 0)
{
int i;
for (i = 0; i < len; i++)
if (cmd[i] == '\0')
cmd[i] = ' ';
cmd[len] = '\0';
obstack_xml_printf (
&obstack,
"<item>"
"<column name=\"pid\">%s</column>"
"<column name=\"user\">%s</column>"
"<column name=\"command\">%s</column>"
"</item>",
dp->d_name,
entry ? entry->pw_name : "?",
cmd);
}
fclose (f);
}
xfree (pathname);
}
}
closedir (dirp);
}
obstack_grow_str0 (&obstack, "</osdata>\n");
buf = obstack_finish (&obstack);
len_avail = strlen (buf);
}
if (offset >= len_avail)
{
/* Done. Get rid of the obstack. */
obstack_free (&obstack, NULL);
buf = NULL;
len_avail = 0;
return 0;
}
if (len > len_avail - offset)
len = len_avail - offset;
memcpy (readbuf, buf + offset, len);
return len;
}
static LONGEST
linux_xfer_partial (struct target_ops *ops, enum target_object object,
const char *annex, gdb_byte *readbuf,
@ -4005,6 +4116,10 @@ linux_xfer_partial (struct target_ops *ops, enum target_object object,
return procfs_xfer_auxv (ops, object, annex, readbuf, writebuf,
offset, len);
if (object == TARGET_OBJECT_OSDATA)
return linux_nat_xfer_osdata (ops, object, annex, readbuf, writebuf,
offset, len);
xfer = linux_proc_xfer_partial (ops, object, annex, readbuf, writebuf,
offset, len);
if (xfer != 0)