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binutils-gdb
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* regcache.c (new_register_cache): No need to check result of xcalloc. 

* server.c (handle_search_memory): Back out calls to xmalloc,
	result is checked and error is returned to user upon failure.
	(handle_query): Ditto.  Add more checks for result of malloc.
	(handle_v_cont): Check result of malloc, report error back to
	user upon failure.
	(handle_v_run): Ditto.  Call freeargv.
	* server.h (freeargv): Declare.
	* utils.c (freeargv): New fn.
This commit is contained in:
Doug Evans 2009-01-19 00:16:46 +00:00
parent a90b386908
commit aef93bd75f
5 changed files with 76 additions and 21 deletions
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12
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,15 @@
2009-01-18 Doug Evans <dje@google.com>
* regcache.c (new_register_cache): No need to check result of xcalloc.
* server.c (handle_search_memory): Back out calls to xmalloc,
result is checked and error is returned to user upon failure.
(handle_query): Ditto. Add more checks for result of malloc.
(handle_v_cont): Check result of malloc, report error back to
user upon failure.
(handle_v_run): Ditto. Call freeargv.
* server.h (freeargv): Declare.
* utils.c (freeargv): New fn.
2009-01-15 Doug Evans <dje@google.com>
* gdbreplay.c (perror_with_name): Make arg const char *.

2
gdb/gdbserver/regcache.c
View File

@ -100,8 +100,6 @@ new_register_cache (void)
in case there are registers the target never fetches. This way they'll
read as zero instead of garbage. */
regcache->registers = xcalloc (1, register_bytes);
if (regcache->registers == NULL)
fatal ("Could not allocate register cache.");
regcache->registers_valid = 0;

65
gdb/gdbserver/server.c
View File

@ -436,7 +436,7 @@ handle_search_memory (char *own_buf, int packet_len)
CORE_ADDR found_addr;
int cmd_name_len = sizeof ("qSearch:memory:") - 1;
pattern = xmalloc (packet_len);
pattern = malloc (packet_len);
if (pattern == NULL)
{
error ("Unable to allocate memory to perform the search");
@ -460,7 +460,7 @@ handle_search_memory (char *own_buf, int packet_len)
if (search_space_len < search_buf_size)
search_buf_size = search_space_len;
search_buf = xmalloc (search_buf_size);
search_buf = malloc (search_buf_size);
if (search_buf == NULL)
{
free (pattern);
@ -575,7 +575,7 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
return;
if (len > PBUFSIZ - 2)
len = PBUFSIZ - 2;
spu_buf = xmalloc (len + 1);
spu_buf = malloc (len + 1);
if (!spu_buf)
return;
@ -604,7 +604,7 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
require_running (own_buf);
strcpy (own_buf, "E00");
spu_buf = xmalloc (packet_len - 15);
spu_buf = malloc (packet_len - 15);
if (!spu_buf)
return;
if (decode_xfer_write (own_buf + 16, packet_len - 16, &annex,
@ -648,7 +648,12 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
more. */
if (len > PBUFSIZ - 2)
len = PBUFSIZ - 2;
data = xmalloc (len + 1);
data = malloc (len + 1);
if (data == NULL)
{
write_enn (own_buf);
return;
}
n = (*the_target->read_auxv) (ofs, data, len + 1);
if (n < 0)
write_enn (own_buf);
@ -726,7 +731,12 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next)
total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name);
document = xmalloc (total_len);
document = malloc (total_len);
if (document == NULL)
{
write_enn (own_buf);
return;
}
strcpy (document, "<library-list>\n");
p = document + strlen (document);
@ -782,7 +792,7 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
return;
if (len > PBUFSIZ - 2)
len = PBUFSIZ - 2;
workbuf = xmalloc (len + 1);
workbuf = malloc (len + 1);
if (!workbuf)
return;
@ -895,9 +905,15 @@ handle_query (char *own_buf, int packet_len, int *new_packet_len_p)
/* Handle "monitor" commands. */
if (strncmp ("qRcmd,", own_buf, 6) == 0)
{
char *mon = xmalloc (PBUFSIZ);
char *mon = malloc (PBUFSIZ);
int len = strlen (own_buf + 6);
if (mon == NULL)
{
write_enn (own_buf);
return;
}
if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2)
{
write_enn (own_buf);
@ -975,7 +991,9 @@ handle_v_cont (char *own_buf, char *status, int *signal)
/* Allocate room for one extra action, for the default remain-stopped
behavior; if no default action is in the list, we'll need the extra
slot. */
resume_info = xmalloc ((n + 1) * sizeof (resume_info[0]));
resume_info = malloc ((n + 1) * sizeof (resume_info[0]));
if (resume_info == NULL)
goto err;
default_action.thread = -1;
default_action.leave_stopped = 1;
@ -1097,7 +1115,7 @@ handle_v_attach (char *own_buf, char *status, int *signal)
static int
handle_v_run (char *own_buf, char *status, int *signal)
{
char *p, **pp, *next_p, **new_argv;
char *p, *next_p, **new_argv;
int i, new_argc;
new_argc = 0;
@ -1107,7 +1125,13 @@ handle_v_run (char *own_buf, char *status, int *signal)
new_argc++;
}
new_argv = xcalloc (new_argc + 2, sizeof (char *));
new_argv = calloc (new_argc + 2, sizeof (char *));
if (new_argv == NULL)
{
write_enn (own_buf);
return 0;
}
i = 0;
for (p = own_buf + strlen ("vRun;"); *p; p = next_p)
{
@ -1119,6 +1143,7 @@ handle_v_run (char *own_buf, char *status, int *signal)
new_argv[i] = NULL;
else
{
/* FIXME: Fail request if out of memory instead of dying. */
new_argv[i] = xmalloc (1 + (next_p - p) / 2);
unhexify (new_argv[i], p, (next_p - p) / 2);
new_argv[i][(next_p - p) / 2] = '\0';
@ -1137,20 +1162,22 @@ handle_v_run (char *own_buf, char *status, int *signal)
if (program_argv == NULL)
{
/* FIXME: new_argv memory leak */
write_enn (own_buf);
return 0;
}
new_argv[0] = xstrdup (program_argv[0]);
new_argv[0] = strdup (program_argv[0]);
if (new_argv[0] == NULL)
{
/* FIXME: new_argv memory leak */
write_enn (own_buf);
return 0;
}
}
/* Free the old argv. */
if (program_argv)
{
for (pp = program_argv; *pp != NULL; pp++)
free (*pp);
free (program_argv);
}
/* Free the old argv and install the new one. */
freeargv (program_argv);
program_argv = new_argv;
*signal = start_inferior (program_argv, status);

1
gdb/gdbserver/server.h
View File

@ -276,6 +276,7 @@ const char *target_signal_to_name (enum target_signal);
void *xmalloc (size_t) ATTR_MALLOC;
void *xcalloc (size_t, size_t) ATTR_MALLOC;
char *xstrdup (const char *) ATTR_MALLOC;
void freeargv (char **argv);
void perror_with_name (const char *string);
void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);
void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2);

17
gdb/gdbserver/utils.c
View File

@ -87,6 +87,23 @@ xstrdup (const char *s)
return ret;
}
/* Free a standard argv vector. */
void
freeargv (char **vector)
{
char **scan;
if (vector != NULL)
{
for (scan = vector; *scan != NULL; scan++)
{
free (*scan);
}
free (vector);
}
}
/* Print the system error message for errno, and also mention STRING
as the file name for which the error was encountered.
Then return to command level. */