freebsd-dev/lib/libc/sys/Makefile.inc
John Baldwin c4f16b69e1 Add a new 'void closefrom(int lowfd)' system call. When called, it closes
any open file descriptors >= 'lowfd'.  It is largely identical to the same
function on other operating systems such as Solaris, DFly, NetBSD, and
OpenBSD.  One difference from other *BSD is that this closefrom() does not
fail with any errors.  In practice, while the manpages for NetBSD and
OpenBSD claim that they return EINTR, they ignore internal errors from
close() and never return EINTR.  DFly does return EINTR, but for the common
use case (closing fd's prior to execve()), the caller really wants all
fd's closed and returning EINTR just forces callers to call closefrom() in
a loop until it stops failing.

Note that this implementation of closefrom(2) does not make any effort to
resolve userland races with open(2) in other threads.  As such, it is not
multithread safe.

Submitted by:	rwatson (initial version)
Reviewed by:	rwatson
MFC after:	2 weeks
2009-06-15 20:38:55 +00:00

190 lines
6.7 KiB
Makefile

# @(#)Makefile.inc 8.3 (Berkeley) 10/24/94
# $FreeBSD$
# sys sources
.PATH: ${.CURDIR}/${MACHINE_ARCH}/sys ${.CURDIR}/sys
# Include the generated makefile containing the *complete* list
# of syscall names in MIASM.
.include "${.CURDIR}/../../sys/sys/syscall.mk"
# Include machine dependent definitions.
#
# MDASM names override the default syscall names in MIASM.
# NOASM will prevent the default syscall code from being generated.
#
.if exists(${.CURDIR}/${MACHINE_ARCH}/sys/Makefile.inc)
.include "${.CURDIR}/${MACHINE_ARCH}/sys/Makefile.inc"
.endif
# Sources common to both syscall interfaces:
SRCS+= stack_protector.c __error.c
.if !defined(WITHOUT_SYSCALL_COMPAT)
SRCS+= fcntl.c ftruncate.c lseek.c mmap.c pread.c pwrite.c truncate.c
PSEUDO+= _fcntl.o
.endif
# Add machine dependent asm sources:
SRCS+=${MDASM}
# Look though the complete list of syscalls (MIASM) for names that are
# not defined with machine dependent implementations (MDASM) and are
# not declared for no generation of default code (NOASM). Add each
# syscall that satisfies these conditions to the ASM list.
.for _asm in ${MIASM}
.if (${MDASM:R:M${_asm:R}} == "")
.if (${NOASM:R:M${_asm:R}} == "")
ASM+=$(_asm)
.endif
.endif
.endfor
OBJS+= ${ASM} ${PSEUDO}
SASM= ${ASM:S/.o/.S/}
SPSEUDO= ${PSEUDO:S/.o/.S/}
SRCS+= ${SASM} ${SPSEUDO}
SYM_MAPS+= ${.CURDIR}/sys/Symbol.map
# Generated files
CLEANFILES+= ${SASM} ${SPSEUDO}
${SASM}:
printf '#include "SYS.h"\nRSYSCALL(${.PREFIX})\n' > ${.TARGET}
${SPSEUDO}:
printf '#include "SYS.h"\nPSEUDO(${.PREFIX:S/_//})\n' \
> ${.TARGET}
MAN+= abort2.2 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_gettime.2 close.2 closefrom.2 \
connect.2 cpuset.2 cpuset_getaffinity.2 dup.2 execve.2 _exit.2 \
extattr_get_file.2 fcntl.2 fhopen.2 flock.2 fork.2 fsync.2 \
getdirentries.2 getdtablesize.2 \
getfh.2 getfsstat.2 getgid.2 getgroups.2 getitimer.2 getlogin.2 \
getpeername.2 getpgrp.2 getpid.2 getpriority.2 getrlimit.2 \
getrusage.2 getsid.2 getsockname.2 \
getsockopt.2 gettimeofday.2 getuid.2 \
intro.2 ioctl.2 issetugid.2 jail.2 kenv.2 kill.2 \
kldfind.2 kldfirstmod.2 kldload.2 kldnext.2 kldstat.2 kldsym.2 \
kldunload.2 kqueue.2 ktrace.2 link.2 lio_listio.2 listen.2 \
lseek.2 \
madvise.2 mincore.2 minherit.2 mkdir.2 mkfifo.2 mknod.2 mlock.2 \
mlockall.2 mmap.2 modfind.2 modnext.2 modstat.2 mount.2 mprotect.2 \
mq_close.2 mq_getattr.2 mq_notify.2 mq_open.2 mq_receive.2 mq_send.2 \
mq_setattr.2 \
msync.2 munmap.2 nanosleep.2 nfssvc.2 ntp_adjtime.2 open.2 \
pathconf.2 pipe.2 poll.2 posix_openpt.2 profil.2 ptrace.2 quotactl.2 \
read.2 readlink.2 reboot.2 recv.2 rename.2 revoke.2 rfork.2 rmdir.2 \
rtprio.2
.if !defined(NO_P1003_1B)
MAN+= sched_get_priority_max.2 sched_setparam.2 \
sched_setscheduler.2 sched_yield.2
.endif
MAN+= sctp_generic_recvmsg.2 sctp_generic_sendmsg.2 sctp_peeloff.2 \
select.2 semctl.2 semget.2 semop.2 send.2 setfib.2 sendfile.2 \
setgroups.2 setpgid.2 setregid.2 setresuid.2 setreuid.2 setsid.2 \
setuid.2 shmat.2 shmctl.2 shmget.2 shm_open.2 shutdown.2 \
sigaction.2 sigaltstack.2 sigpending.2 sigprocmask.2 sigqueue.2 \
sigreturn.2 sigstack.2 sigsuspend.2 sigwait.2 sigwaitinfo.2 \
socket.2 socketpair.2 stat.2 statfs.2 \
swapon.2 symlink.2 sync.2 sysarch.2 syscall.2 \
timer_create.2 timer_delete.2 timer_settime.2 \
truncate.2 umask.2 undelete.2 \
unlink.2 utimes.2 utrace.2 uuidgen.2 vfork.2 wait.2 write.2
MLINKS+=access.2 eaccess.2 access.2 faccessat.2
MLINKS+=brk.2 sbrk.2
MLINKS+=chdir.2 fchdir.2
MLINKS+=chflags.2 fchflags.2 chflags.2 lchflags.2
MLINKS+=chmod.2 fchmod.2 chmod.2 fchmodat.2 chmod.2 lchmod.2
MLINKS+=chown.2 fchown.2 chown.2 fchownat.2 chown.2 lchown.2
MLINKS+=clock_gettime.2 clock_getres.2 clock_gettime.2 clock_settime.2
MLINKS+=cpuset.2 cpuset_getid.2 cpuset.2 cpuset_setid.2
MLINKS+=cpuset_getaffinity.2 cpuset_setaffinity.2
MLINKS+=dup.2 dup2.2
MLINKS+=execve.2 fexecve.2
MLINKS+=extattr_get_file.2 extattr.2 \
extattr_get_file.2 extattr_delete_fd.2 \
extattr_get_file.2 extattr_delete_file.2 \
extattr_get_file.2 extattr_delete_list.2 \
extattr_get_file.2 extattr_get_fd.2 \
extattr_get_file.2 extattr_get_list.2 \
extattr_get_file.2 extattr_list_fd.2 \
extattr_get_file.2 extattr_list_file.2 \
extattr_get_file.2 extattr_list_link.2 \
extattr_get_file.2 extattr_set_fd.2 \
extattr_get_file.2 extattr_set_file.2 \
extattr_get_file.2 extattr_set_link.2
MLINKS+=fhopen.2 fhstat.2 fhopen.2 fhstatfs.2
MLINKS+=getdirentries.2 getdents.2
MLINKS+=getfh.2 lgetfh.2
MLINKS+=getgid.2 getegid.2
MLINKS+=getitimer.2 setitimer.2
MLINKS+=getlogin.2 getlogin_r.3
MLINKS+=getlogin.2 setlogin.2
MLINKS+=getpgrp.2 getpgid.2
MLINKS+=getpid.2 getppid.2
MLINKS+=getpriority.2 setpriority.2
MLINKS+=getrlimit.2 setrlimit.2
MLINKS+=getsockopt.2 setsockopt.2
MLINKS+=gettimeofday.2 settimeofday.2
MLINKS+=getuid.2 geteuid.2
MLINKS+=intro.2 errno.2
MLINKS+=jail.2 jail_attach.2 \
jail.2 jail_get.2 \
jail.2 jail_remove.2 \
jail.2 jail_set.2
MLINKS+=kldunload.2 kldunloadf.2
MLINKS+=kqueue.2 kevent.2
MLINKS+=link.2 linkat.2
MLINKS+=madvise.2 posix_madvise.2
MLINKS+=mkdir.2 mkdirat.2
MLINKS+=mkfifo.2 mkfifoat.2
MLINKS+=mknod.2 mknodat.2
MLINKS+=mlock.2 munlock.2
MLINKS+=mlockall.2 munlockall.2
MLINKS+=modnext.2 modfnext.2
MLINKS+=mount.2 nmount.2 mount.2 unmount.2
MLINKS+=mq_receive.2 mq_timedreceive.2
MLINKS+=mq_send.2 mq_timedsend.2
MLINKS+=ntp_adjtime.2 ntp_gettime.2
MLINKS+=open.2 openat.2
MLINKS+=pathconf.2 fpathconf.2
MLINKS+=read.2 pread.2 read.2 preadv.2 read.2 readv.2
MLINKS+=readlink.2 readlinkat.2
MLINKS+=recv.2 recvfrom.2 recv.2 recvmsg.2
MLINKS+=rename.2 renameat.2
.if !defined(NO_P1003_1B)
MLINKS+=sched_get_priority_max.2 sched_get_priority_min.2 \
sched_get_priority_max.2 sched_rr_get_interval.2
MLINKS+=sched_setparam.2 sched_getparam.2
MLINKS+=sched_setscheduler.2 sched_getscheduler.2
.endif
MLINKS+=select.2 FD_CLR.3 select.2 FD_ISSET.3 select.2 FD_SET.3 \
select.2 FD_ZERO.3
MLINKS+=send.2 sendmsg.2 send.2 sendto.2
MLINKS+=setpgid.2 setpgrp.2
MLINKS+=setresuid.2 getresgid.2 setresuid.2 getresuid.2 setresuid.2 setresgid.2
MLINKS+=setuid.2 setegid.2 setuid.2 seteuid.2 setuid.2 setgid.2
MLINKS+=shmat.2 shmdt.2
MLINKS+=shm_open.2 shm_unlink.2
MLINKS+=sigwaitinfo.2 sigtimedwait.2
MLINKS+=stat.2 fstat.2 stat.2 fstatat.2 stat.2 lstat.2
MLINKS+=statfs.2 fstatfs.2
MLINKS+=swapon.2 swapoff.2
MLINKS+=symlink.2 symlinkat.2
MLINKS+=syscall.2 __syscall.2
MLINKS+=timer_settime.2 timer_getoverrun.2 timer_settime.2 timer_gettime.2
MLINKS+=truncate.2 ftruncate.2
MLINKS+=unlink.2 unlinkat.2
MLINKS+=utimes.2 futimes.2 utimes.2 futimesat.2 utimes.2 lutimes.2
MLINKS+=wait.2 wait3.2 wait.2 wait4.2 wait.2 waitpid.2
MLINKS+=write.2 pwrite.2 write.2 pwritev.2 write.2 writev.2