diff options
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 126 |
1 files changed, 116 insertions, 10 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 7ea36273b..8548f5e4a 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -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 |