/*- * Copyright (c) 1994-1995 Søren Schmidt * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer * in this position and unchanged. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software withough specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #include "opt_compat.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __i386__ #include #endif #include #include #include #include #include #ifdef __alpha__ #define BSD_TO_LINUX_SIGNAL(sig) (sig) #else #define BSD_TO_LINUX_SIGNAL(sig) \ (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig) #endif struct linux_rlimit { unsigned long rlim_cur; unsigned long rlim_max; }; #ifndef __alpha__ static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = { RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK, RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE, RLIMIT_MEMLOCK, -1 }; #endif /*!__alpha__*/ #ifndef __alpha__ int linux_alarm(struct proc *p, struct linux_alarm_args *args) { struct itimerval it, old_it; struct timeval tv; int s; #ifdef DEBUG if (ldebug(alarm)) printf(ARGS(alarm, "%u"), args->secs); #endif if (args->secs > 100000000) return EINVAL; it.it_value.tv_sec = (long)args->secs; it.it_value.tv_usec = 0; it.it_interval.tv_sec = 0; it.it_interval.tv_usec = 0; s = splsoftclock(); old_it = p->p_realtimer; getmicrouptime(&tv); if (timevalisset(&old_it.it_value)) callout_stop(&p->p_itcallout); if (it.it_value.tv_sec != 0) { callout_reset(&p->p_itcallout, tvtohz(&it.it_value), realitexpire, p); timevaladd(&it.it_value, &tv); } p->p_realtimer = it; splx(s); if (timevalcmp(&old_it.it_value, &tv, >)) { timevalsub(&old_it.it_value, &tv); if (old_it.it_value.tv_usec != 0) old_it.it_value.tv_sec++; p->p_retval[0] = old_it.it_value.tv_sec; } return 0; } #endif /*!__alpha__*/ int linux_brk(struct proc *p, struct linux_brk_args *args) { #if 0 struct vmspace *vm = p->p_vmspace; vm_offset_t new, old; int error; if ((vm_offset_t)args->dsend < (vm_offset_t)vm->vm_daddr) return EINVAL; if (((caddr_t)args->dsend - (caddr_t)vm->vm_daddr) > p->p_rlimit[RLIMIT_DATA].rlim_cur) return ENOMEM; old = round_page((vm_offset_t)vm->vm_daddr) + ctob(vm->vm_dsize); new = round_page((vm_offset_t)args->dsend); p->p_retval[0] = old; if ((new-old) > 0) { if (swap_pager_full) return ENOMEM; error = vm_map_find(&vm->vm_map, NULL, 0, &old, (new-old), FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); if (error) return error; vm->vm_dsize += btoc((new-old)); p->p_retval[0] = (int)(vm->vm_daddr + ctob(vm->vm_dsize)); } return 0; #else struct vmspace *vm = p->p_vmspace; vm_offset_t new, old; struct obreak_args /* { char * nsize; } */ tmp; #ifdef DEBUG if (ldebug(brk)) printf(ARGS(brk, "%p"), (void *)args->dsend); #endif old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize); new = (vm_offset_t)args->dsend; tmp.nsize = (char *) new; if (((caddr_t)new > vm->vm_daddr) && !obreak(p, &tmp)) p->p_retval[0] = (long)new; else p->p_retval[0] = (long)old; return 0; #endif } int linux_uselib(struct proc *p, struct linux_uselib_args *args) { struct nameidata ni; struct vnode *vp; struct exec *a_out; struct vattr attr; vm_offset_t vmaddr; unsigned long file_offset; vm_offset_t buffer; unsigned long bss_size; int error; caddr_t sg; int locked; sg = stackgap_init(); CHECKALTEXIST(p, &sg, args->library); #ifdef DEBUG if (ldebug(uselib)) printf(ARGS(uselib, "%s"), args->library); #endif a_out = NULL; locked = 0; vp = NULL; NDINIT(&ni, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, args->library, p); error = namei(&ni); if (error) goto cleanup; vp = ni.ni_vp; /* * XXX This looks like a bogus check - a LOCKLEAF namei should not succeed * without returning a vnode. */ if (vp == NULL) { error = ENOEXEC; /* ?? */ goto cleanup; } NDFREE(&ni, NDF_ONLY_PNBUF); /* * From here on down, we have a locked vnode that must be unlocked. */ locked++; /* * Writable? */ if (vp->v_writecount) { error = ETXTBSY; goto cleanup; } /* * Executable? */ error = VOP_GETATTR(vp, &attr, p->p_ucred, p); if (error) goto cleanup; if ((vp->v_mount->mnt_flag & MNT_NOEXEC) || ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) { error = ENOEXEC; goto cleanup; } /* * Sensible size? */ if (attr.va_size == 0) { error = ENOEXEC; goto cleanup; } /* * Can we access it? */ error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p); if (error) goto cleanup; error = VOP_OPEN(vp, FREAD, p->p_ucred, p); if (error) goto cleanup; /* * Lock no longer needed */ VOP_UNLOCK(vp, 0, p); locked = 0; /* * Pull in executable header into kernel_map */ error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE, VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, 0); if (error) goto cleanup; /* * Is it a Linux binary ? */ if (((a_out->a_magic >> 16) & 0xff) != 0x64) { error = ENOEXEC; goto cleanup; } /* While we are here, we should REALLY do some more checks */ /* * Set file/virtual offset based on a.out variant. */ switch ((int)(a_out->a_magic & 0xffff)) { case 0413: /* ZMAGIC */ file_offset = 1024; break; case 0314: /* QMAGIC */ file_offset = 0; break; default: error = ENOEXEC; goto cleanup; } bss_size = round_page(a_out->a_bss); /* * Check various fields in header for validity/bounds. */ if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) { error = ENOEXEC; goto cleanup; } /* text + data can't exceed file size */ if (a_out->a_data + a_out->a_text > attr.va_size) { error = EFAULT; goto cleanup; } /* To protect p->p_rlimit in the if condition. */ mtx_assert(&Giant, MA_OWNED); /* * text/data/bss must not exceed limits * XXX: this is not complete. it should check current usage PLUS * the resources needed by this library. */ if (a_out->a_text > MAXTSIZ || a_out->a_data + bss_size > p->p_rlimit[RLIMIT_DATA].rlim_cur) { error = ENOMEM; goto cleanup; } /* * prevent more writers */ vp->v_flag |= VTEXT; /* * Check if file_offset page aligned,. * Currently we cannot handle misalinged file offsets, * and so we read in the entire image (what a waste). */ if (file_offset & PAGE_MASK) { #ifdef DEBUG printf("uselib: Non page aligned binary %lu\n", file_offset); #endif /* * Map text+data read/write/execute */ /* a_entry is the load address and is page aligned */ vmaddr = trunc_page(a_out->a_entry); /* get anon user mapping, read+write+execute */ error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); if (error) goto cleanup; /* map file into kernel_map */ error = vm_mmap(kernel_map, &buffer, round_page(a_out->a_text + a_out->a_data + file_offset), VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, trunc_page(file_offset)); if (error) goto cleanup; /* copy from kernel VM space to user space */ error = copyout((caddr_t)(void *)(uintptr_t)(buffer + file_offset), (caddr_t)vmaddr, a_out->a_text + a_out->a_data); /* release temporary kernel space */ vm_map_remove(kernel_map, buffer, buffer + round_page(a_out->a_text + a_out->a_data + file_offset)); if (error) goto cleanup; } else { #ifdef DEBUG printf("uselib: Page aligned binary %lu\n", file_offset); #endif /* * for QMAGIC, a_entry is 20 bytes beyond the load address * to skip the executable header */ vmaddr = trunc_page(a_out->a_entry); /* * Map it all into the process's space as a single copy-on-write * "data" segment. */ error = vm_mmap(&p->p_vmspace->vm_map, &vmaddr, a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL, MAP_PRIVATE | MAP_FIXED, (caddr_t)vp, file_offset); if (error) goto cleanup; } #ifdef DEBUG printf("mem=%08lx = %08lx %08lx\n", vmaddr, ((long*)vmaddr)[0], ((long*)vmaddr)[1]); #endif if (bss_size != 0) { /* * Calculate BSS start address */ vmaddr = trunc_page(a_out->a_entry) + a_out->a_text + a_out->a_data; /* * allocate some 'anon' space */ error = vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); if (error) goto cleanup; } cleanup: /* * Unlock vnode if needed */ if (locked) VOP_UNLOCK(vp, 0, p); /* * Release the kernel mapping. */ if (a_out) vm_map_remove(kernel_map, (vm_offset_t)a_out, (vm_offset_t)a_out + PAGE_SIZE); return error; } int linux_newselect(struct proc *p, struct linux_newselect_args *args) { struct select_args bsa; struct timeval tv0, tv1, utv, *tvp; caddr_t sg; int error; #ifdef DEBUG if (ldebug(newselect)) printf(ARGS(newselect, "%d, %p, %p, %p, %p"), args->nfds, (void *)args->readfds, (void *)args->writefds, (void *)args->exceptfds, (void *)args->timeout); #endif error = 0; bsa.nd = args->nfds; bsa.in = args->readfds; bsa.ou = args->writefds; bsa.ex = args->exceptfds; bsa.tv = args->timeout; /* * Store current time for computation of the amount of * time left. */ if (args->timeout) { if ((error = copyin(args->timeout, &utv, sizeof(utv)))) goto select_out; #ifdef DEBUG if (ldebug(newselect)) printf(LMSG("incoming timeout (%ld/%ld)"), utv.tv_sec, utv.tv_usec); #endif if (itimerfix(&utv)) { /* * The timeval was invalid. Convert it to something * valid that will act as it does under Linux. */ sg = stackgap_init(); tvp = stackgap_alloc(&sg, sizeof(utv)); utv.tv_sec += utv.tv_usec / 1000000; utv.tv_usec %= 1000000; if (utv.tv_usec < 0) { utv.tv_sec -= 1; utv.tv_usec += 1000000; } if (utv.tv_sec < 0) timevalclear(&utv); if ((error = copyout(&utv, tvp, sizeof(utv)))) goto select_out; bsa.tv = tvp; } microtime(&tv0); } error = select(p, &bsa); #ifdef DEBUG if (ldebug(newselect)) printf(LMSG("real select returns %d"), error); #endif if (error) { /* * See fs/select.c in the Linux kernel. Without this, * Maelstrom doesn't work. */ if (error == ERESTART) error = EINTR; goto select_out; } if (args->timeout) { if (p->p_retval[0]) { /* * Compute how much time was left of the timeout, * by subtracting the current time and the time * before we started the call, and subtracting * that result from the user-supplied value. */ microtime(&tv1); timevalsub(&tv1, &tv0); timevalsub(&utv, &tv1); if (utv.tv_sec < 0) timevalclear(&utv); } else timevalclear(&utv); #ifdef DEBUG if (ldebug(newselect)) printf(LMSG("outgoing timeout (%ld/%ld)"), utv.tv_sec, utv.tv_usec); #endif if ((error = copyout(&utv, args->timeout, sizeof(utv)))) goto select_out; } select_out: #ifdef DEBUG if (ldebug(newselect)) printf(LMSG("newselect_out -> %d"), error); #endif return error; } int linux_getpgid(struct proc *p, struct linux_getpgid_args *args) { struct proc *curp; #ifdef DEBUG if (ldebug(getpgid)) printf(ARGS(getpgid, "%d"), args->pid); #endif if (args->pid != p->p_pid) { if (!(curp = pfind(args->pid))) return ESRCH; } else curp = p; p->p_retval[0] = curp->p_pgid; return 0; } int linux_mremap(struct proc *p, struct linux_mremap_args *args) { struct munmap_args /* { void *addr; size_t len; } */ bsd_args; int error = 0; #ifdef DEBUG if (ldebug(mremap)) printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"), (void *)args->addr, (unsigned long)args->old_len, (unsigned long)args->new_len, (unsigned long)args->flags); #endif args->new_len = round_page(args->new_len); args->old_len = round_page(args->old_len); if (args->new_len > args->old_len) { p->p_retval[0] = 0; return ENOMEM; } if (args->new_len < args->old_len) { bsd_args.addr = args->addr + args->new_len; bsd_args.len = args->old_len - args->new_len; error = munmap(p, &bsd_args); } p->p_retval[0] = error ? 0 : (u_long)args->addr; return error; } int linux_msync(struct proc *p, struct linux_msync_args *args) { struct msync_args bsd_args; bsd_args.addr = args->addr; bsd_args.len = args->len; bsd_args.flags = 0; /* XXX ignore */ return msync(p, &bsd_args); } #ifndef __alpha__ int linux_time(struct proc *p, struct linux_time_args *args) { struct timeval tv; linux_time_t tm; int error; #ifdef DEBUG if (ldebug(time)) printf(ARGS(time, "*")); #endif microtime(&tv); tm = tv.tv_sec; if (args->tm && (error = copyout(&tm, args->tm, sizeof(linux_time_t)))) return error; p->p_retval[0] = tm; return 0; } #endif /*!__alpha__*/ struct linux_times_argv { long tms_utime; long tms_stime; long tms_cutime; long tms_cstime; }; #define CLK_TCK 100 /* Linux uses 100 */ #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) int linux_times(struct proc *p, struct linux_times_args *args) { struct timeval tv; struct linux_times_argv tms; struct rusage ru; int error; #ifdef DEBUG if (ldebug(times)) printf(ARGS(times, "*")); #endif mtx_lock_spin(&sched_lock); calcru(p, &ru.ru_utime, &ru.ru_stime, NULL); mtx_unlock_spin(&sched_lock); tms.tms_utime = CONVTCK(ru.ru_utime); tms.tms_stime = CONVTCK(ru.ru_stime); tms.tms_cutime = CONVTCK(p->p_stats->p_cru.ru_utime); tms.tms_cstime = CONVTCK(p->p_stats->p_cru.ru_stime); if ((error = copyout((caddr_t)&tms, (caddr_t)args->buf, sizeof(struct linux_times_argv)))) return error; microuptime(&tv); p->p_retval[0] = (int)CONVTCK(tv); return 0; } int linux_newuname(struct proc *p, struct linux_newuname_args *args) { struct linux_new_utsname utsname; char *osrelease, *osname; #ifdef DEBUG if (ldebug(newuname)) printf(ARGS(newuname, "*")); #endif osname = linux_get_osname(p); osrelease = linux_get_osrelease(p); bzero(&utsname, sizeof(struct linux_new_utsname)); strncpy(utsname.sysname, osname, LINUX_MAX_UTSNAME-1); strncpy(utsname.nodename, hostname, LINUX_MAX_UTSNAME-1); strncpy(utsname.release, osrelease, LINUX_MAX_UTSNAME-1); strncpy(utsname.version, version, LINUX_MAX_UTSNAME-1); strncpy(utsname.machine, machine, LINUX_MAX_UTSNAME-1); strncpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME-1); return (copyout((caddr_t)&utsname, (caddr_t)args->buf, sizeof(struct linux_new_utsname))); } struct linux_utimbuf { linux_time_t l_actime; linux_time_t l_modtime; }; int linux_utime(struct proc *p, struct linux_utime_args *args) { struct utimes_args /* { char *path; struct timeval *tptr; } */ bsdutimes; struct timeval tv[2], *tvp; struct linux_utimbuf lut; int error; caddr_t sg; sg = stackgap_init(); CHECKALTEXIST(p, &sg, args->fname); #ifdef DEBUG if (ldebug(utime)) printf(ARGS(utime, "%s, *"), args->fname); #endif if (args->times) { if ((error = copyin(args->times, &lut, sizeof lut))) return error; tv[0].tv_sec = lut.l_actime; tv[0].tv_usec = 0; tv[1].tv_sec = lut.l_modtime; tv[1].tv_usec = 0; /* so that utimes can copyin */ tvp = (struct timeval *)stackgap_alloc(&sg, sizeof(tv)); if (tvp == NULL) return (ENAMETOOLONG); if ((error = copyout(tv, tvp, sizeof(tv)))) return error; bsdutimes.tptr = tvp; } else bsdutimes.tptr = NULL; bsdutimes.path = args->fname; return utimes(p, &bsdutimes); } #define __WCLONE 0x80000000 #ifndef __alpha__ int linux_waitpid(struct proc *p, struct linux_waitpid_args *args) { struct wait_args /* { int pid; int *status; int options; struct rusage *rusage; } */ tmp; int error, tmpstat; #ifdef DEBUG if (ldebug(waitpid)) printf(ARGS(waitpid, "%d, %p, %d"), args->pid, (void *)args->status, args->options); #endif tmp.pid = args->pid; tmp.status = args->status; tmp.options = (args->options & (WNOHANG | WUNTRACED)); /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ if (args->options & __WCLONE) tmp.options |= WLINUXCLONE; tmp.rusage = NULL; if ((error = wait4(p, &tmp)) != 0) return error; if (args->status) { if ((error = copyin(args->status, &tmpstat, sizeof(int))) != 0) return error; tmpstat &= 0xffff; if (WIFSIGNALED(tmpstat)) tmpstat = (tmpstat & 0xffffff80) | BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); else if (WIFSTOPPED(tmpstat)) tmpstat = (tmpstat & 0xffff00ff) | (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); return copyout(&tmpstat, args->status, sizeof(int)); } else return 0; } #endif /*!__alpha__*/ int linux_wait4(struct proc *p, struct linux_wait4_args *args) { struct wait_args /* { int pid; int *status; int options; struct rusage *rusage; } */ tmp; int error, tmpstat; #ifdef DEBUG if (ldebug(wait4)) printf(ARGS(wait4, "%d, %p, %d, %p"), args->pid, (void *)args->status, args->options, (void *)args->rusage); #endif tmp.pid = args->pid; tmp.status = args->status; tmp.options = (args->options & (WNOHANG | WUNTRACED)); /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ if (args->options & __WCLONE) tmp.options |= WLINUXCLONE; tmp.rusage = args->rusage; if ((error = wait4(p, &tmp)) != 0) return error; SIGDELSET(p->p_siglist, SIGCHLD); if (args->status) { if ((error = copyin(args->status, &tmpstat, sizeof(int))) != 0) return error; tmpstat &= 0xffff; if (WIFSIGNALED(tmpstat)) tmpstat = (tmpstat & 0xffffff80) | BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); else if (WIFSTOPPED(tmpstat)) tmpstat = (tmpstat & 0xffff00ff) | (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); return copyout(&tmpstat, args->status, sizeof(int)); } else return 0; } int linux_mknod(struct proc *p, struct linux_mknod_args *args) { caddr_t sg; struct mknod_args bsd_mknod; struct mkfifo_args bsd_mkfifo; sg = stackgap_init(); CHECKALTCREAT(p, &sg, args->path); #ifdef DEBUG if (ldebug(mknod)) printf(ARGS(mknod, "%s, %d, %d"), args->path, args->mode, args->dev); #endif if (args->mode & S_IFIFO) { bsd_mkfifo.path = args->path; bsd_mkfifo.mode = args->mode; return mkfifo(p, &bsd_mkfifo); } else { bsd_mknod.path = args->path; bsd_mknod.mode = args->mode; bsd_mknod.dev = args->dev; return mknod(p, &bsd_mknod); } } /* * UGH! This is just about the dumbest idea I've ever heard!! */ int linux_personality(struct proc *p, struct linux_personality_args *args) { #ifdef DEBUG if (ldebug(personality)) printf(ARGS(personality, "%d"), args->per); #endif #ifndef __alpha__ if (args->per != 0) return EINVAL; #endif /* Yes Jim, it's still a Linux... */ p->p_retval[0] = 0; return 0; } /* * Wrappers for get/setitimer for debugging.. */ int linux_setitimer(struct proc *p, struct linux_setitimer_args *args) { struct setitimer_args bsa; struct itimerval foo; int error; #ifdef DEBUG if (ldebug(setitimer)) printf(ARGS(setitimer, "%p, %p"), (void *)args->itv, (void *)args->oitv); #endif bsa.which = args->which; bsa.itv = args->itv; bsa.oitv = args->oitv; if (args->itv) { if ((error = copyin((caddr_t)args->itv, (caddr_t)&foo, sizeof(foo)))) return error; #ifdef DEBUG if (ldebug(setitimer)) { printf("setitimer: value: sec: %ld, usec: %ld\n", foo.it_value.tv_sec, foo.it_value.tv_usec); printf("setitimer: interval: sec: %ld, usec: %ld\n", foo.it_interval.tv_sec, foo.it_interval.tv_usec); } #endif } return setitimer(p, &bsa); } int linux_getitimer(struct proc *p, struct linux_getitimer_args *args) { struct getitimer_args bsa; #ifdef DEBUG if (ldebug(getitimer)) printf(ARGS(getitimer, "%p"), (void *)args->itv); #endif bsa.which = args->which; bsa.itv = args->itv; return getitimer(p, &bsa); } #ifndef __alpha__ int linux_nice(struct proc *p, struct linux_nice_args *args) { struct setpriority_args bsd_args; bsd_args.which = PRIO_PROCESS; bsd_args.who = 0; /* current process */ bsd_args.prio = args->inc; return setpriority(p, &bsd_args); } #endif /*!__alpha__*/ int linux_setgroups(p, uap) struct proc *p; struct linux_setgroups_args *uap; { struct pcred *pc; linux_gid_t linux_gidset[NGROUPS]; gid_t *bsd_gidset; int ngrp, error; pc = p->p_cred; ngrp = uap->gidsetsize; /* * cr_groups[0] holds egid. Setting the whole set from * the supplied set will cause egid to be changed too. * Keep cr_groups[0] unchanged to prevent that. */ if ((error = suser(p)) != 0) return (error); if (ngrp >= NGROUPS) return (EINVAL); pc->pc_ucred = crcopy(pc->pc_ucred); if (ngrp > 0) { error = copyin((caddr_t)uap->gidset, (caddr_t)linux_gidset, ngrp * sizeof(linux_gid_t)); if (error) return (error); pc->pc_ucred->cr_ngroups = ngrp + 1; bsd_gidset = pc->pc_ucred->cr_groups; ngrp--; while (ngrp >= 0) { bsd_gidset[ngrp + 1] = linux_gidset[ngrp]; ngrp--; } } else pc->pc_ucred->cr_ngroups = 1; setsugid(p); return (0); } int linux_getgroups(p, uap) struct proc *p; struct linux_getgroups_args *uap; { struct pcred *pc; linux_gid_t linux_gidset[NGROUPS]; gid_t *bsd_gidset; int bsd_gidsetsz, ngrp, error; pc = p->p_cred; bsd_gidset = pc->pc_ucred->cr_groups; bsd_gidsetsz = pc->pc_ucred->cr_ngroups - 1; /* * cr_groups[0] holds egid. Returning the whole set * here will cause a duplicate. Exclude cr_groups[0] * to prevent that. */ if ((ngrp = uap->gidsetsize) == 0) { p->p_retval[0] = bsd_gidsetsz; return (0); } if (ngrp < bsd_gidsetsz) return (EINVAL); ngrp = 0; while (ngrp < bsd_gidsetsz) { linux_gidset[ngrp] = bsd_gidset[ngrp + 1]; ngrp++; } if ((error = copyout((caddr_t)linux_gidset, (caddr_t)uap->gidset, ngrp * sizeof(linux_gid_t)))) return (error); p->p_retval[0] = ngrp; return (0); } #ifndef __alpha__ int linux_setrlimit(p, uap) struct proc *p; struct linux_setrlimit_args *uap; { struct __setrlimit_args bsd; struct linux_rlimit rlim; int error; caddr_t sg = stackgap_init(); #ifdef DEBUG if (ldebug(setrlimit)) printf(ARGS(setrlimit, "%d, %p"), uap->resource, (void *)uap->rlim); #endif if (uap->resource >= LINUX_RLIM_NLIMITS) return (EINVAL); bsd.which = linux_to_bsd_resource[uap->resource]; if (bsd.which == -1) return (EINVAL); error = copyin(uap->rlim, &rlim, sizeof(rlim)); if (error) return (error); bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit)); bsd.rlp->rlim_cur = (rlim_t)rlim.rlim_cur; bsd.rlp->rlim_max = (rlim_t)rlim.rlim_max; return (setrlimit(p, &bsd)); } int linux_getrlimit(p, uap) struct proc *p; struct linux_getrlimit_args *uap; { struct __getrlimit_args bsd; struct linux_rlimit rlim; int error; caddr_t sg = stackgap_init(); #ifdef DEBUG if (ldebug(getrlimit)) printf(ARGS(getrlimit, "%d, %p"), uap->resource, (void *)uap->rlim); #endif if (uap->resource >= LINUX_RLIM_NLIMITS) return (EINVAL); bsd.which = linux_to_bsd_resource[uap->resource]; if (bsd.which == -1) return (EINVAL); bsd.rlp = stackgap_alloc(&sg, sizeof(struct rlimit)); error = getrlimit(p, &bsd); if (error) return (error); rlim.rlim_cur = (unsigned long)bsd.rlp->rlim_cur; if (rlim.rlim_cur == ULONG_MAX) rlim.rlim_cur = LONG_MAX; rlim.rlim_max = (unsigned long)bsd.rlp->rlim_max; if (rlim.rlim_max == ULONG_MAX) rlim.rlim_max = LONG_MAX; return (copyout(&rlim, uap->rlim, sizeof(rlim))); } #endif /*!__alpha__*/ int linux_sched_setscheduler(p, uap) struct proc *p; struct linux_sched_setscheduler_args *uap; { struct sched_setscheduler_args bsd; #ifdef DEBUG if (ldebug(sched_setscheduler)) printf(ARGS(sched_setscheduler, "%d, %d, %p"), uap->pid, uap->policy, (const void *)uap->param); #endif switch (uap->policy) { case LINUX_SCHED_OTHER: bsd.policy = SCHED_OTHER; break; case LINUX_SCHED_FIFO: bsd.policy = SCHED_FIFO; break; case LINUX_SCHED_RR: bsd.policy = SCHED_RR; break; default: return EINVAL; } bsd.pid = uap->pid; bsd.param = uap->param; return sched_setscheduler(p, &bsd); } int linux_sched_getscheduler(p, uap) struct proc *p; struct linux_sched_getscheduler_args *uap; { struct sched_getscheduler_args bsd; int error; #ifdef DEBUG if (ldebug(sched_getscheduler)) printf(ARGS(sched_getscheduler, "%d"), uap->pid); #endif bsd.pid = uap->pid; error = sched_getscheduler(p, &bsd); switch (p->p_retval[0]) { case SCHED_OTHER: p->p_retval[0] = LINUX_SCHED_OTHER; break; case SCHED_FIFO: p->p_retval[0] = LINUX_SCHED_FIFO; break; case SCHED_RR: p->p_retval[0] = LINUX_SCHED_RR; break; } return error; } #define REBOOT_CAD_ON 0x89abcdef #define REBOOT_CAD_OFF 0 #define REBOOT_HALT 0xcdef0123 int linux_reboot(struct proc *p, struct linux_reboot_args *args) { struct reboot_args bsd_args; #ifdef DEBUG if (ldebug(reboot)) printf(ARGS(reboot, "0x%x"), args->opt); #endif if (args->opt == REBOOT_CAD_ON || args->opt == REBOOT_CAD_OFF) return (0); bsd_args.opt = args->opt == REBOOT_HALT ? RB_HALT : 0; return (reboot(p, &bsd_args)); }