Alfred Perlstein c636255150 fix races in the uidinfo subsystem, several problems existed: ... 1) while allocating a uidinfo struct malloc is called with M_WAITOK, it's possible that while asleep another process by the same user could have woken up earlier and inserted an entry into the uid hash table. Having redundant entries causes inconsistancies that we can't handle. fix: do a non-waiting malloc, and if that fails then do a blocking malloc, after waking up check that no one else has inserted an entry for us already. 2) Because many checks for sbsize were done as "test then set" in a non atomic manner it was possible to exceed the limits put up via races. fix: instead of querying the count then setting, we just attempt to set the count and leave it up to the function to return success or failure. 3) The uidinfo code was inlining and repeating, lookups and insertions and deletions needed to be in their own functions for clarity. Reviewed by: green		2000-06-22 22:27:16 +00:00
..
imgact_svr4.c
Makefile	Don't forget to back up svr4_syscallnames.c. Don't depend on side effects	2000-05-09 21:40:01 +00:00
svr4_acl.h
svr4_dirent.h
svr4_errno.h
svr4_exec.h
svr4_fcntl.c	Remove unneeded #include <sys/kernel.h>	2000-04-29 15:36:14 +00:00
svr4_fcntl.h
svr4_filio.c	Remove some all-too-wordy debugging prints	2000-01-15 15:30:44 +00:00
svr4_filio.h
svr4_fuser.h
svr4_hrt.h
svr4_ioctl.c	Remove unnecessary includes	1999-12-08 12:01:59 +00:00
svr4_ioctl.h
svr4_ipc.c	Remove unneeded #include <sys/kernel.h>	2000-04-29 15:36:14 +00:00
svr4_ipc.h
svr4_misc.c	fix races in the uidinfo subsystem, several problems existed:	2000-06-22 22:27:16 +00:00
svr4_mman.h
svr4_proto.h	Regenerated (to fix "created from" lines, and to fix the previous	2000-05-10 14:38:28 +00:00
svr4_resource.c	SVR4 emulator source files now take their compilation options from	1999-12-08 10:51:17 +00:00
svr4_resource.h
svr4_siginfo.h
svr4_signal.c	Fix handling of svr4_sigsets, which are implemented in SysVR4 as a sequence	2000-01-15 15:38:17 +00:00
svr4_signal.h	Fix handling of svr4_sigsets, which are implemented in SysVR4 as a sequence	2000-01-15 15:38:17 +00:00
svr4_socket.c	Back out the previous change to the queue(3) interface.	2000-05-26 02:09:24 +00:00
svr4_socket.h
svr4_sockio.c	Remove unnecessary includes	1999-12-08 12:01:59 +00:00
svr4_sockio.h
svr4_sockmod.h
svr4_stat.c	Remove unnecessary includes	1999-12-08 12:01:59 +00:00
svr4_stat.h
svr4_statvfs.h
svr4_stream.c	Remove unneeded <sys/buf.h> includes.	2000-04-18 15:15:39 +00:00
svr4_stropts.h
svr4_syscall.h	Regenerated (to fix "created from" lines, and to fix the previous	2000-05-10 14:38:28 +00:00
svr4_syscallnames.c	Regenerated (to fix "created from" lines, and to fix the previous	2000-05-10 14:38:28 +00:00
svr4_sysconfig.h
svr4_sysent.c	Regenerated (to fix "created from" lines, and to fix the previous	2000-05-10 14:38:28 +00:00
svr4_systeminfo.h
svr4_sysvec.c	Give the "streams" modulea version (1) and depend on it from the	2000-05-06 01:39:45 +00:00
svr4_termios.c	Remove unnecessary includes	1999-12-08 12:01:59 +00:00
svr4_termios.h
svr4_time.h
svr4_timod.h
svr4_ttold.c	Remove unnecessary includes	1999-12-08 12:01:59 +00:00
svr4_ttold.h
svr4_types.h
svr4_ucontext.h
svr4_ulimit.h
svr4_ustat.h
svr4_util.h
svr4_utsname.h
svr4_wait.h
svr4.h	Removed bogus include of opt_global.h. opt_global.h is automatically	2000-01-09 12:29:45 +00:00
syscalls.conf
syscalls.master	Fixed the "created from" lines generated from this file. makesyscalls.sh	2000-05-10 14:32:32 +00:00