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* syscalls.cc (setpriority): Implement PRIO_PGRP, PRIO_USER and 

setting priority in other Cygwin processes.
	(getpriority): Implement PRIO_PGRP, PRIO_USER and getting nice value
	from other processes.
This commit is contained in:
Corinna Vinschen 2005-01-26 13:07:48 +00:00
parent b7a51e1b2a
commit 0f72b90637
2 changed files with 123 additions and 10 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2005-01-25 Corinna Vinschen <corinna@vinschen.de>
* syscalls.cc (setpriority): Implement PRIO_PGRP, PRIO_USER and
setting priority in other Cygwin processes.
(getpriority): Implement PRIO_PGRP, PRIO_USER and getting nice value
from other processes.
2005-01-26 Pierre Humblet <pierre.humblet@ieee.org>
* path.cc (path_conv::check): Return ENOTDIR rather than ENOENT

126
winsup/cygwin/syscalls.cc
View File

@ -2445,33 +2445,139 @@ memccpy (_PTR out, const _PTR in, int c, size_t len)
extern "C" int
setpriority (int which, id_t who, int value)
{
/* TODO: Support PRIO_PGRP and PRIO_USER. */
if (which != PRIO_PROCESS || (who != 0 && (pid_t) who != myself->pid))
DWORD prio = nice_to_winprio (value);
int error = 0;
switch (which)
{
case PRIO_PROCESS:
if (!who)
who = myself->pid;
if ((pid_t) who == myself->pid)
{
if (!SetPriorityClass (hMainProc, prio))
{
set_errno (EACCES);
return -1;
}
myself->nice = value;
debug_printf ("Set nice to %d", myself->nice);
return 0;
}
break;
case PRIO_PGRP:
if (!who)
who = myself->pgid;
break;
case PRIO_USER:
if (!who)
who = myself->uid;
break;
default:
set_errno (EINVAL);
return -1;
}
DWORD prio = nice_to_winprio (value);
if (SetPriorityClass (hMainProc, prio) == FALSE)
winpids pids ((DWORD) PID_MAP_RW);
for (DWORD i = 0; i < pids.npids; ++i)
{
__seterrno ();
_pinfo *p = pids[i];
if (p)
{
switch (which)
{
case PRIO_PROCESS:
if ((pid_t) who != p->pid)
continue;
break;
case PRIO_PGRP:
if ((pid_t) who != p->pgid)
continue;
break;
case PRIO_USER:
if ((__uid32_t) who != p->uid)
continue;
break;
}
HANDLE proc_h = OpenProcess (PROCESS_SET_INFORMATION, FALSE,
p->dwProcessId);
if (!proc_h)
error = EPERM;
else
{
if (!SetPriorityClass (proc_h, prio))
error = EACCES;
else
p->nice = value;
CloseHandle (proc_h);
}
}
}
pids.reset ();
if (error)
{
set_errno (error);
return -1;
}
myself->nice = value;
debug_printf ("Set nice to %d", myself->nice);
return 0;
}
extern "C" int
getpriority (int which, id_t who)
{
/* TODO: Support PRIO_PGRP and PRIO_USER. */
if (which != PRIO_PROCESS || (who != 0 && (pid_t) who != myself->pid))
int nice = NZERO * 2; /* Illegal value */
switch (which)
{
case PRIO_PROCESS:
if (!who)
who = myself->pid;
if ((pid_t) who == myself->pid)
return myself->nice;
break;
case PRIO_PGRP:
if (!who)
who = myself->pgid;
break;
case PRIO_USER:
if (!who)
who = myself->uid;
break;
default:
set_errno (EINVAL);
return -1;
}
return myself->nice;
winpids pids ((DWORD) 0);
for (DWORD i = 0; i < pids.npids; ++i)
{
_pinfo *p = pids[i];
if (p)
switch (which)
{
case PRIO_PROCESS:
if ((pid_t) who == p->pid)
{
nice = p->nice;
goto out;
}
break;
case PRIO_PGRP:
if ((pid_t) who == p->pgid && p->nice < nice)
nice = p->nice;
break;
case PRIO_USER:
if ((__uid32_t) who == p->uid && p->nice < nice)
nice = p->nice;
break;
}
}
out:
pids.reset ();
if (nice == NZERO * 2)
{
set_errno (ESRCH);
return -1;
}
return nice;
}
extern "C" int