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* pututxline: Don't set errno=0 in subfunctions.jilles2013-04-171-4/+8
| | | | | | | | | | The functions utx_active_add(), utx_active_remove(), utx_lastlogin_add() and utx_log_add() set errno to 0 if they are successful. This not only violates POSIX if pututxline() is successful, but may also overwrite a valid error with 0 if, for example, utx_lastlogin_add() fails while utx_log_add() succeeds. Reviewed by: ed
* - Correct mispellings of the word occurrencegabor2013-04-174-6/+6
| | | | Submitted by: Christoph Mallon <christoph.mallon@gmx.de> (via private mail)
* mdoc: remove superfluous paragraph macro.joel2013-04-161-1/+0
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* - Document that sem_wait() can fail with EINTR if it is interrupted by ajhb2013-04-161-1/+9
| | | | | | | | signal. - Fix the old ksem implementation for POSIX semaphores to not restart sem_wait() or sem_timedwait() if interrupted by a signal. MFC after: 1 week
* libc: Fix typo in French translation.jilles2013-04-141-1/+1
| | | | | | PR: kern/177704 Submitted by: martymac MFC after: 1 week
* Spelling correctionemaste2013-04-112-2/+2
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* Remove unused atomic headeremaste2013-04-111-1/+0
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* Remove the number of addresses restriction from sctp_connectx().tuexen2013-04-101-202/+94
| | | | | | | Remove unused code. While there, do some cleanup of the code. MFC after: 1 week
* Correct the returned message lengths for timeval and bintime controlgnn2013-04-051-3/+3
| | | | | | messages (SO_BINTIME, SO_TIMEVAL). Obtained from: phk
* Replace access to /dev/random with the kernel pseudo-random numberdelphij2013-04-024-55/+32
| | | | | | | | source sysctl(KERN_ARND) and remove the fallback code. Obtained from: OpenBSD Reviewed by: secteam MFC after: 1 month
* Fix return type of extattr_set_* and fix rmextattr(8) utility.mdf2013-04-021-3/+3
| | | | | | | | | extattr_set_{fd,file,link} is logically a write(2)-like operation and should return ssize_t, just like extattr_get_*. Also, the user-space utility was using an int for the return value of extattr_get_* and extattr_list_*, both of which return an ssize_t. MFC after: 1 week
* wordexp(): Remove wrong IFS usage.jilles2013-04-011-4/+1
| | | | | | | | | | | Words in shell script are separated by spaces or tabs independent of the value of IFS. The value of IFS is only relevant for the result of substitutions. Therefore, there should be a space between 'wordexp' and the words to be expanded, not an IFS character. Paranoia might dictate that the shell ignore IFS from the environment (even though our sh currently uses it), so do not depend on it in the new test case.
* btowc(3), isblank(3): Correct prototypes for _l variants.jilles2013-03-272-3/+3
| | | | MFC after: 1 week
* accept(2): Mention inheritance of O_ASYNC and signal destination.jilles2013-03-261-3/+13
| | | | | | While almost nobody uses O_ASYNC, and rightly so, the inheritance of the related properties across accept() is a portability issue like the inheritance of O_NONBLOCK.
* Compile contrib/tzcode/stdtime/localtime.c with -fwrapv, since it reliesdim2013-03-241-0/+3
| | | | | | | | | | | | | on signed integer overflow wrapping. Otherwise mktime(3) and timegm(3) can hang, in case the timestamp passed in struct tm is not representable in a time_t. Specifically, any timestamp after 2038-01-19 03:14:07, in combination with a 32-bit time_t. Note that it would be better to change the code to not rely on undefined behaviour, but it is contributed code, and it is not entirely trivial to fix the issue properly. MFC after: 3 days
* Document chflagsat(2).pjd2013-03-213-3/+54
| | | | Obtained from: jilles
* Implement chflagsat(2) system call, similar to fchmodat(2), but operates onpjd2013-03-211-0/+1
| | | | | | | file flags. Reviewed by: kib, jilles Sponsored by: The FreeBSD Foundation
* - Make 'flags' argument to chflags(2), fchflags(2) and lchflags(2) of typepjd2013-03-211-3/+3
| | | | | | | | | | | u_long. Before this change it was of type int for syscalls, but prototypes in sys/stat.h and documentation for chflags(2) and fchflags(2) (but not for lchflags(2)) stated that it was u_long. Now some related functions use u_long type for flags (strtofflags(3), fflagstostr(3)). - Make path argument of type 'const char *' for consistency. Discussed on: arch Sponsored by: The FreeBSD Foundation
* Allow O_CLOEXEC in posix_openpt() flags.jilles2013-03-211-2/+7
| | | | | PR: kern/162374 Reviewed by: ed
* Implement SOCK_CLOEXEC, SOCK_NONBLOCK and MSG_CMSG_CLOEXEC.jilles2013-03-193-4/+27
| | | | | | | | | | | | | | | | | | | This change allows creating file descriptors with close-on-exec set in some situations. SOCK_CLOEXEC and SOCK_NONBLOCK can be OR'ed in socket() and socketpair()'s type parameter, and MSG_CMSG_CLOEXEC to recvmsg() makes file descriptors (SCM_RIGHTS) atomically close-on-exec. The numerical values for SOCK_CLOEXEC and SOCK_NONBLOCK are as in NetBSD. MSG_CMSG_CLOEXEC is the first free bit for MSG_*. The SOCK_* flags are not passed to MAC because this may cause incorrect failures and can be done later via fcntl() anyway. On the other hand, audit is expected to cope with the new flags. For MSG_CMSG_CLOEXEC, unp_externalize() is extended to take a flags argument. Reviewed by: kib
* There are actually two different cases when mlock(2) returnsglebius2013-03-191-2/+7
| | | | | | ENOMEM. Clarify this, taking text from SUS. Reviewed by: kib
* Add restrict keyword to realpath manpage.kevlo2013-03-181-1/+1
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* Add a note to the HISTORY section about lchflags(2) being introduced inpjd2013-03-161-0/+4
| | | | FreeBSD 5.0.
* Update to the latest (un)vis(3) sources from NetBSD. This addsbrooks2013-03-142-2/+18
| | | | | | | | | | | | | multibyte support[0] and the new functions strenvisx and strsenvisx. Add MLINKS for vis(3) functions add by this and the initial import from NetBSD[1]. PR: bin/166364, bin/175418 Submitted by: "J.R. Oldroyd" <fbsd@opal.com>[0] stefanf[1] Obtained from: NetBSD MFC after: 2 weeks
* libc: Avoid SIGPIPE when nscd closes the connection unexpectedly.jilles2013-03-131-4/+5
| | | | | | | | | It is almost always a bug if nscd closes the connection unexpectedly but programs should not be killed with SIGPIPE for it. Reviewed by: bushman Tested by: Jan Beich MFC after: 1 week
* Link getcontextx(3) to getcontext(3).pluknet2013-03-131-0/+1
| | | | | Reviewed by: kib MFC after: 1 week
* Add the getcontextx prototype to SYNOPSIS.pluknet2013-03-131-1/+3
| | | | | Reviewed by: kib MFC after: 1 week
* Create a symlink from strchrnul.3 to strchr.3.zeising2013-03-061-1/+2
| | | | | | This was forgotten in the initial commit of strchrnul() Approved by: theraven
* - Implement two new system calls:pjd2013-03-025-0/+232
| | | | | | | | | | | | | | | | | | | | | | | | | int bindat(int fd, int s, const struct sockaddr *addr, socklen_t addrlen); int connectat(int fd, int s, const struct sockaddr *name, socklen_t namelen); which allow to bind and connect respectively to a UNIX domain socket with a path relative to the directory associated with the given file descriptor 'fd'. - Add manual pages for the new syscalls. - Make the new syscalls available for processes in capability mode sandbox. - Add capability rights CAP_BINDAT and CAP_CONNECTAT that has to be present on the directory descriptor for the syscalls to work. - Update audit(4) to support those two new syscalls and to handle path in sockaddr_un structure relative to the given directory descriptor. - Update procstat(1) to recognize the new capability rights. - Document the new capability rights in cap_rights_limit(2). Sponsored by: The FreeBSD Foundation Discussed with: rwatson, jilles, kib, des
* mdoc: remove superfluous paragraph macro.joel2013-03-023-3/+0
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* Merge Capsicum overhaul:pjd2013-03-028-144/+584
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Capability is no longer separate descriptor type. Now every descriptor has set of its own capability rights. - The cap_new(2) system call is left, but it is no longer documented and should not be used in new code. - The new syscall cap_rights_limit(2) should be used instead of cap_new(2), which limits capability rights of the given descriptor without creating a new one. - The cap_getrights(2) syscall is renamed to cap_rights_get(2). - If CAP_IOCTL capability right is present we can further reduce allowed ioctls list with the new cap_ioctls_limit(2) syscall. List of allowed ioctls can be retrived with cap_ioctls_get(2) syscall. - If CAP_FCNTL capability right is present we can further reduce fcntls that can be used with the new cap_fcntls_limit(2) syscall and retrive them with cap_fcntls_get(2). - To support ioctl and fcntl white-listing the filedesc structure was heavly modified. - The audit subsystem, kdump and procstat tools were updated to recognize new syscalls. - Capability rights were revised and eventhough I tried hard to provide backward API and ABI compatibility there are some incompatible changes that are described in detail below: CAP_CREATE old behaviour: - Allow for openat(2)+O_CREAT. - Allow for linkat(2). - Allow for symlinkat(2). CAP_CREATE new behaviour: - Allow for openat(2)+O_CREAT. Added CAP_LINKAT: - Allow for linkat(2). ABI: Reuses CAP_RMDIR bit. - Allow to be target for renameat(2). Added CAP_SYMLINKAT: - Allow for symlinkat(2). Removed CAP_DELETE. Old behaviour: - Allow for unlinkat(2) when removing non-directory object. - Allow to be source for renameat(2). Removed CAP_RMDIR. Old behaviour: - Allow for unlinkat(2) when removing directory. Added CAP_RENAMEAT: - Required for source directory for the renameat(2) syscall. Added CAP_UNLINKAT (effectively it replaces CAP_DELETE and CAP_RMDIR): - Allow for unlinkat(2) on any object. - Required if target of renameat(2) exists and will be removed by this call. Removed CAP_MAPEXEC. CAP_MMAP old behaviour: - Allow for mmap(2) with any combination of PROT_NONE, PROT_READ and PROT_WRITE. CAP_MMAP new behaviour: - Allow for mmap(2)+PROT_NONE. Added CAP_MMAP_R: - Allow for mmap(PROT_READ). Added CAP_MMAP_W: - Allow for mmap(PROT_WRITE). Added CAP_MMAP_X: - Allow for mmap(PROT_EXEC). Added CAP_MMAP_RW: - Allow for mmap(PROT_READ | PROT_WRITE). Added CAP_MMAP_RX: - Allow for mmap(PROT_READ | PROT_EXEC). Added CAP_MMAP_WX: - Allow for mmap(PROT_WRITE | PROT_EXEC). Added CAP_MMAP_RWX: - Allow for mmap(PROT_READ | PROT_WRITE | PROT_EXEC). Renamed CAP_MKDIR to CAP_MKDIRAT. Renamed CAP_MKFIFO to CAP_MKFIFOAT. Renamed CAP_MKNODE to CAP_MKNODEAT. CAP_READ old behaviour: - Allow pread(2). - Disallow read(2), readv(2) (if there is no CAP_SEEK). CAP_READ new behaviour: - Allow read(2), readv(2). - Disallow pread(2) (CAP_SEEK was also required). CAP_WRITE old behaviour: - Allow pwrite(2). - Disallow write(2), writev(2) (if there is no CAP_SEEK). CAP_WRITE new behaviour: - Allow write(2), writev(2). - Disallow pwrite(2) (CAP_SEEK was also required). Added convinient defines: #define CAP_PREAD (CAP_SEEK | CAP_READ) #define CAP_PWRITE (CAP_SEEK | CAP_WRITE) #define CAP_MMAP_R (CAP_MMAP | CAP_SEEK | CAP_READ) #define CAP_MMAP_W (CAP_MMAP | CAP_SEEK | CAP_WRITE) #define CAP_MMAP_X (CAP_MMAP | CAP_SEEK | 0x0000000000000008ULL) #define CAP_MMAP_RW (CAP_MMAP_R | CAP_MMAP_W) #define CAP_MMAP_RX (CAP_MMAP_R | CAP_MMAP_X) #define CAP_MMAP_WX (CAP_MMAP_W | CAP_MMAP_X) #define CAP_MMAP_RWX (CAP_MMAP_R | CAP_MMAP_W | CAP_MMAP_X) #define CAP_RECV CAP_READ #define CAP_SEND CAP_WRITE #define CAP_SOCK_CLIENT \ (CAP_CONNECT | CAP_GETPEERNAME | CAP_GETSOCKNAME | CAP_GETSOCKOPT | \ CAP_PEELOFF | CAP_RECV | CAP_SEND | CAP_SETSOCKOPT | CAP_SHUTDOWN) #define CAP_SOCK_SERVER \ (CAP_ACCEPT | CAP_BIND | CAP_GETPEERNAME | CAP_GETSOCKNAME | \ CAP_GETSOCKOPT | CAP_LISTEN | CAP_PEELOFF | CAP_RECV | CAP_SEND | \ CAP_SETSOCKOPT | CAP_SHUTDOWN) Added defines for backward API compatibility: #define CAP_MAPEXEC CAP_MMAP_X #define CAP_DELETE CAP_UNLINKAT #define CAP_MKDIR CAP_MKDIRAT #define CAP_RMDIR CAP_UNLINKAT #define CAP_MKFIFO CAP_MKFIFOAT #define CAP_MKNOD CAP_MKNODAT #define CAP_SOCK_ALL (CAP_SOCK_CLIENT | CAP_SOCK_SERVER) Sponsored by: The FreeBSD Foundation Reviewed by: Christoph Mallon <christoph.mallon@gmx.de> Many aspects discussed with: rwatson, benl, jonathan ABI compatibility discussed with: kib
* Provide cap_sandboxed(3) function, which is a wrapper around cap_getmode(2)pjd2013-03-025-0/+124
| | | | | | | | | | | system call, which has a nice property - it never fails, so it is a bit easier to use. If there is no support for capability mode in the kernel the function will return false (not in a sandbox). If the kernel is compiled with the support for capability mode, the function will return true or false depending if the calling process is in the capability mode sandbox or not respectively. Sponsored by: The FreeBSD Foundation
* Fix assignment of maximum bounadary.delphij2013-03-011-1/+1
| | | | | | Submitted by: Sascha Wildner <saw online de> Obtained from: DragonFly rev fd39c81ba220f7ad6e4dc9b30d45e828cf58a1ad MFC after: 2 weeks
* Assign the len field of the netbuf structure to the current length ofkevlo2013-03-011-1/+1
| | | | | | a sockaddr. Obtained from: NetBSD
* mdoc: add missing El.joel2013-02-271-0/+1
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* Add an implementation of open_memstream() and open_wmemstream(). Thesejhb2013-02-275-1/+639
| | | | | | | | | routines provide write-only stdio FILE objects that store their data in a dynamically allocated buffer. They are a string builder interface somewhat akin to a completely dynamic sbuf. Reviewed by: bde, jilles (earlier versions) MFC after: 1 month
* libc/opendir: Improve behaviour of union uniquifier:jilles2013-02-241-25/+26
| | | | | | | | | * Reopen the directory using openat(fd, ".", ...) instead of opening the pathname again. This fixes a race condition where the meaning of the pathname changes and allows a reopen with fdopendir(). * Always reopen the directory for union stacks, not only when DTF_REWIND is passed. Applications should be able to fchdir(dirfd(dir)) and *at(dirfd(dir), ...). DTF_REWIND now does nothing.
* Now that qsort(3) has a sample comparison function, point to thatkeramida2013-02-231-1/+7
| | | | | | | | | | example from bsearch(3) too, so that we don't have to duplicate the example code in both places. PR: docs/176197 Reviewed by: stefanf Approved by: remko (mentor), gjb (mentor) MFC after: 1 week
* Sort sections.joel2013-02-201-6/+6
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* Various improvements to the qsort(3) usage example:keramida2013-02-201-14/+8
| | | | | | | | | | | | | | | - Remove unused #include. - Do not cast away const. - Use the canonical idiom to compare two numbers. - Use proper type for sizes, i.e. size_t instead of int. - Correct indentation. - Simplify printf("\n") to puts(""). - Use return instead of exit() in main(). Submitted by: Christoph Mallon, christoph.mallon at gmx.de Approved by: gjb (mentor) Reviewed by: stefanf MFC after: 1 week
* Add a sample program that shows how a custom comparison function andkeramida2013-02-191-1/+47
| | | | | | | | | qsort(3) can work together to sort an array of integers. PR: docs/176197 Submitted by: Fernando, fapesteguia at opensistemas.com Approved by: gjb (mentor) MFC after: 1 week
* setbuf(3): Restore a BUGS section about setbuf().jilles2013-02-181-1/+4
| | | | | | | The brokenness of setbuf() is not specific to 4.2BSD and 4.3BSD but inherent in the API definition. Reported by: bde
* Make more code be protected by internal mutex, and now it is fork-safe, indavidxu2013-02-171-2/+2
| | | | | error case, the file exclusive lock is now released as soon as possible, in previous code, child process can still hold the exclusive lock.
* Put one file per line so it is easier to read diffs against those files.pjd2013-02-162-184/+653
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* Simplify code by using flag O_EXLOCK.davidxu2013-02-161-9/+3
| | | | PR: kern/175674
* setbuf(3): Remove bugs section about ancient versions of BSD.jilles2013-02-151-17/+1
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* Change examples to be consistent with what style(9) says.zeising2013-02-142-8/+8
| | | | | Approved by: joel (mentor) MFC After: 2 weeks
* Add strchrnul(), a GNU function similar to strchr(), except that it returnszeising2013-02-134-5/+81
| | | | | | | a pointer to the end of the string, rather than NULL, if the character was not found. Approved by: theraven
* Make the F_READAHEAD option to fcntl(2) work as documented: a value of zeroian2013-02-131-2/+2
| | | | | | | | now disables read-ahead. It used to effectively restore the system default readahead hueristic if it had been changed; a negative value now restores the default. Reviewed by: kib
* When clang builds libc it may insert calls to __aeabi_* functions. Normallyandrew2013-02-121-0/+19
| | | | | | | | | | this is not a problem as they are resolved by libgcc. The exception is for the __aeabi_mem* functions. These call back into libc to the appropriate function. This causes issues for static binaries as we only link against libc once so there is no way for it to call into libgcc and back. The fix for this is to include these symbols in libc but keep them hidden so binaries use the libgcc version.
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