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* syscalls.cc (_read): Validate input pointer.

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(_write): Ditto.
(system): Ditto.
This commit is contained in:
Christopher Faylor
2001-10-19 02:27:19 +00:00
parent 5e709b88c5
commit da8f3291d1
2 changed files with 17 additions and 2 deletions
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13
winsup/cygwin/syscalls.cc
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@@ -287,6 +287,9 @@ setsid (void)
extern "C" ssize_t
_read (int fd, void *ptr, size_t len)
{
if (__check_null_invalid_struct_errno (ptr, len))
return -1;
int res;
extern int sigcatchers;
int e = get_errno ();
@@ -341,9 +344,12 @@ _read (int fd, void *ptr, size_t len)
extern "C" ssize_t
_write (int fd, const void *ptr, size_t len)
{
int res = -1;
sigframe thisframe (mainthread);
if (__check_null_invalid_struct_errno (ptr, len))
return -1;
int res = -1;
sigframe thisframe (mainthread);
cygheap_fdget cfd (fd);
if (cfd < 0)
goto done;
@@ -1245,6 +1251,9 @@ done:
extern "C" int
system (const char *cmdstring)
{
if (check_null_empty_str_errno (cmdstring))
return -1;
sigframe thisframe (mainthread);
int res;
const char* command[4];