Index:
__syscall(2)_exit(2)
accept(2)
access(2)
acct(2)
adjtime(2)
aio_cancel(2)
aio_error(2)
aio_read(2)
aio_return(2)
aio_suspend(2)
aio_waitcomplete(2)
aio_write(2)
bind(2)
brk(2)
chdir(2)
chflags(2)
chmod(2)
chown(2)
chroot(2)
clock_getres(2)
clock_gettime(2)
clock_settime(2)
close(2)
connect(2)
creat(2)
dup(2)
dup2(2)
eaccess(2)
errno(2)
execve(2)
extattr(2)
extattr_delete_fd(2)
extattr_delete_file(2)
extattr_get_fd(2)
extattr_get_file(2)
extattr_set_fd(2)
extattr_set_file(2)
fchdir(2)
fchflags(2)
fchmod(2)
fchown(2)
fcntl(2)
fhopen(2)
fhstat(2)
fhstatfs(2)
flock(2)
fork(2)
fpathconf(2)
fstat(2)
fstatfs(2)
fsync(2)
ftruncate(2)
futimes(2)
getdents(2)
getdirentries(2)
getdtablesize(2)
getegid(2)
geteuid(2)
getfh(2)
getfsstat(2)
getgid(2)
getgroups(2)
getitimer(2)
getlogin(2)
getpeername(2)
getpgid(2)
getpgrp(2)
getpid(2)
getppid(2)
getpriority(2)
getresgid(2)
getresuid(2)
getrlimit(2)
getrusage(2)
getsid(2)
getsockname(2)
getsockopt(2)
gettimeofday(2)
getuid(2)
i386_get_ioperm(2)
i386_get_ldt(2)
i386_set_ioperm(2)
i386_set_ldt(2)
i386_vm86(2)
intro(2)
ioctl(2)
issetugid(2)
jail(2)
jail_attach(2)
kenv(2)
kevent(2)
kill(2)
killpg(2)
kldfind(2)
kldfirstmod(2)
kldload(2)
kldnext(2)
kldstat(2)
kldsym(2)
kldunload(2)
kqueue(2)
kse(2)
kse_create(2)
kse_exit(2)
kse_release(2)
kse_switchin(2)
kse_thr_interrupt(2)
kse_wakeup(2)
ktrace(2)
lchflags(2)
lchmod(2)
lchown(2)
lgetfh(2)
link(2)
lio_listio(2)
listen(2)
lseek(2)
lstat(2)
lutimes(2)
madvise(2)
mincore(2)
minherit(2)
mkdir(2)
mkfifo(2)
mknod(2)
mlock(2)
mlockall(2)
mmap(2)
modfind(2)
modfnext(2)
modnext(2)
modstat(2)
mount(2)
mprotect(2)
msync(2)
munlock(2)
munlockall(2)
munmap(2)
nanosleep(2)
nfssvc(2)
nmount(2)
ntp_adjtime(2)
ntp_gettime(2)
open(2)
pathconf(2)
pipe(2)
poll(2)
posix_madvise(2)
pread(2)
profil(2)
ptrace(2)
pwrite(2)
quotactl(2)
read(2)
readlink(2)
readv(2)
reboot(2)
recv(2)
recvfrom(2)
recvmsg(2)
rename(2)
revoke(2)
rfork(2)
rmdir(2)
rtprio(2)
sbrk(2)
sched_get_priority_max(2)
sched_get_priority_min(2)
sched_getparam(2)
sched_getscheduler(2)
sched_rr_get_interval(2)
sched_setparam(2)
sched_setscheduler(2)
sched_yield(2)
select(2)
semctl(2)
semget(2)
semop(2)
send(2)
sendfile(2)
sendmsg(2)
sendto(2)
setegid(2)
seteuid(2)
setgid(2)
setgroups(2)
setitimer(2)
setlogin(2)
setpgid(2)
setpgrp(2)
setpriority(2)
setregid(2)
setresgid(2)
setresuid(2)
setreuid(2)
setrlimit(2)
setsid(2)
setsockopt(2)
settimeofday(2)
setuid(2)
shmat(2)
shmctl(2)
shmdt(2)
shmget(2)
shutdown(2)
sigaction(2)
sigaltstack(2)
sigblock(2)
sigmask(2)
sigpause(2)
sigpending(2)
sigprocmask(2)
sigreturn(2)
sigsetmask(2)
sigstack(2)
sigsuspend(2)
sigvec(2)
sigwait(2)
socket(2)
socketpair(2)
stat(2)
statfs(2)
swapoff(2)
swapon(2)
symlink(2)
sync(2)
sysarch(2)
syscall(2)
truncate(2)
umask(2)
undelete(2)
unlink(2)
unmount(2)
utimes(2)
utrace(2)
uuidgen(2)
vfork(2)
wait(2)
wait3(2)
wait4(2)
waitpid(2)
write(2)
writev(2)
i386_set_ldt(2)
NAME
i386_get_ldt, i386_set_ldt -- manage i386 per-process Local Descriptor Table entries
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <machine/segments.h> #include <machine/sysarch.h> int i386_get_ldt(int start_sel, union descriptor *descs, int num_sels); int i386_set_ldt(int start_sel, union descriptor *descs, int num_sels);
DESCRIPTION
The i386_get_ldt() system call will return the list of i386 descriptors that the process has in its LDT. The i386_set_ldt() system call will set a list of i386 descriptors for the current process in its LDT. Both rou- tines accept a starting selector number start_sel, an array of memory that will contain the descriptors to be set or returned descs, and the number of entries to set or return num_sels. The argument descs can be either segment_descriptor or gate_descriptor and are defined in <i386/segments.h>. These structures are defined by the architecture as disjoint bit-fields, so care must be taken in con- structing them. If start_sel is LDT_AUTO_ALLOC, num_sels is 1 and the descriptor pointed to by descs is legal, then i386_set_ldt() will allocate a descriptor and return its selector number. If num_descs is 1, start_sels is valid, and descs is NULL, then i386_set_ldt() will free that descriptor (making it available to be real- located again later). If num_descs is 0, start_sels is 0 and descs is NULL then, as a special case, i386_set_ldt() will free all descriptors.
RETURN VALUES
Upon successful completion, i386_get_ldt() returns the number of descrip- tors currently in the LDT. The i386_set_ldt() system call returns the first selector set. In the case when a descriptor is allocated by the kernel, its number will be returned. Otherwise, a value of -1 is returned and the global variable errno is set to indicate the error.
ERRORS
The i386_get_ldt() and i386_set_ldt() system calls will fail if: [EINVAL] An inappropriate value was used for start_sel or num_sels. [EACCES] The caller attempted to use a descriptor that would circumvent protection or cause a failure.
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