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Kyle Evans 773fa8cd13 execve: disallow argc == 0
The manpage has contained the following verbiage on the matter for just
under 31 years:

"At least one argument must be present in the array"

Previous to this version, it had been prefaced with the weakening phrase
"By convention."

Carry through and document it the rest of the way.  Allowing argc == 0
has been a source of security issues in the past, and it's hard to
imagine a valid use-case for allowing it.  Toss back EINVAL if we ended
up not copying in any args for *execve().

The manpage change can be considered "Obtained from: OpenBSD"

Reviewed by:	emaste, kib, markj (all previous version)
Differential Revision:	https://reviews.freebsd.org/D34045
2022-01-26 13:40:27 -06:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github [skip ci] fix syntax in CODEOWNERS 2021-07-22 10:58:54 -06:00
bin pkgbase: Create a FreeBSD-csh package 2021-12-21 10:17:50 +01:00
cddl zfs: merge openzfs/zfs@17b2ae0b2 (master) into main 2022-01-22 23:05:15 +01:00
contrib bsnmp: Fix two typos in error messages 2022-01-26 20:25:40 +01:00
crypto ssh: pass 0 to procctl(2) to operate on self 2022-01-20 19:54:49 -05:00
etc Append Keyboard Layout specified option for using VNC. 2022-01-20 23:49:27 +01:00
gnu libdialog: Bump shared library version to 10. 2021-10-27 09:30:24 -07:00
include Avoid memory allocations in the ARC eviction thread 2022-01-21 10:28:13 -08:00
kerberos5 pkgbase: Create a FreeBSD-kerberos package 2021-09-07 10:23:14 +02:00
lib execve: disallow argc == 0 2022-01-26 13:40:27 -06:00
libexec mountd: Delay starting mountd until after mountlate 2022-01-23 14:17:40 -08:00
release pkgbase: Remove runtime dependency on bootloader 2022-01-14 10:52:08 +01:00
rescue rescue: include ping iff at least one of INET & INET6 is enabled 2021-12-31 13:16:30 -05:00
sbin ifconfig: improve vlan options parsing 2022-01-17 09:35:15 +00:00
secure OpenSSL: Merge OpenSSL 1.1.1m 2021-12-14 16:03:52 -05:00
share powerpc: Enable LLDB on all powerpc architectures 2022-01-26 15:03:27 +01:00
stand Remove quotes around Makefile .error/.warn/.info strings 2022-01-22 14:03:07 -05:00
sys execve: disallow argc == 0 2022-01-26 13:40:27 -06:00
targets Retire obsolete iscsi_initiator(4) 2021-10-26 16:17:35 -04:00
tests tests/net*: destroy interface from inside a jail 2022-01-24 21:08:03 -08:00
tools atsectl: Remove. 2022-01-24 16:40:02 -08:00
usr.bin limit sort(1) memory usage to 20% of available main memory 2022-01-26 19:30:11 +00:00
usr.sbin pkgbase: bhyve: Tag the kbdlayout file to be in the bhyve package 2022-01-26 19:32:19 +01:00
.arcconfig Remove history.immutable from .arcconfig 2021-04-13 12:36:25 +01:00
.arclint
.cirrus.yml Cirrus-CI: build with LLVM 13 package 2021-11-18 09:57:33 -05:00
.clang-format clang-format: Add bitset loop macros 2021-09-21 12:08:01 -04:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore .gitignore: Restore inadvertently deleted file 2022-01-18 08:00:42 -08:00
COPYRIGHT Welcome 2022, update copyrights. 2022-01-01 09:49:49 -07:00
LOCKS
MAINTAINERS Remove myself from bhyve maintenance; ENOTIME. 2021-11-19 07:09:30 +10:00
Makefile Remove quotes around Makefile .error/.warn/.info strings 2022-01-22 14:03:07 -05:00
Makefile.inc1 Stop trimming 'hf' suffixes from MACHINE_ARCH. 2022-01-25 11:31:17 -08:00
Makefile.libcompat libcompat: Remove MIPS from list of compat libraries 2021-12-09 08:22:51 -07:00
Makefile.sys.inc
ObsoleteFiles.inc Make date headers in ObsoleteFiles.inc a little more consistent 2022-01-22 21:04:38 +01:00
README.md README.md: update gnu directory description 2021-12-17 08:45:31 -05:00
RELNOTES RELNOTES: Note support for KTLS RX for TLS 1.3. 2021-12-14 11:02:45 -08:00
UPDATING UPDATING: Sort by date 2022-01-23 22:39:10 -08:00

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