Github/emacs
2
0
Fork 1
mirror of git://git.sv.gnu.org/emacs.git synced 2026-02-23 13:27:36 +00:00
Code Issues Projects Releases Packages Wiki Activity

; * src/w32proc.c (sys_kill): Handle negative PID when sig == 0.

Browse source
This commit is contained in:
Eli Zaretskii 2024-06-13 11:03:52 +03:00
parent 8eeb159b95
commit 72e6b05221
1 changed files with 29 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
src/w32proc.c
View file

@ -2727,6 +2727,7 @@ sys_kill (pid_t pid, int sig)
HANDLE proc_hand;
int need_to_free = 0;
int rc = 0;
pid_t orig_pid = pid;
/* Each process is in its own process group. */
if (pid < 0)
@ -2734,7 +2735,8 @@ sys_kill (pid_t pid, int sig)
/* Only handle signals that can be mapped to a similar behavior on Windows */
if (sig != 0
&& sig != SIGINT && sig != SIGKILL && sig != SIGQUIT && sig != SIGHUP && sig != SIGTRAP)
&& sig != SIGINT && sig != SIGKILL && sig != SIGQUIT
&& sig != SIGHUP && sig != SIGTRAP)
{
errno = EINVAL;
return -1;
@ -2760,11 +2762,34 @@ sys_kill (pid_t pid, int sig)
errno = EPERM;
return -1;
case ERROR_INVALID_PARAMETER: /* process PID does not exist */
errno = ESRCH;
return -1;
{
if (orig_pid == pid)
{
errno = ESRCH;
return -1;
}
/* If we received a negative value, try again with the
original one we received. */
proc_hand = OpenProcess (PROCESS_QUERY_INFORMATION,
0, orig_pid);
if (proc_hand == NULL)
{
err = GetLastError ();
switch (err)
{
case ERROR_ACCESS_DENIED:
errno = EPERM;
return -1;
case ERROR_INVALID_PARAMETER:
errno = ESRCH;
return -1;
}
}
break;
}
}
}
else
if (proc_hand != NULL)
CloseHandle (proc_hand);
return 0;
}