freebsd-dev/sys
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
..
amd64 exec: Remove the stack gap implementation 2022-01-17 16:11:54 -05:00
arm exec: Introduce the PROC_PS_STRINGS() macro 2022-01-17 16:11:54 -05:00
arm64 Add the Armv8.3-SPE registers 2022-01-19 12:07:35 +00:00
bsm
cam ses: minor cleanup 2022-01-19 12:08:03 -07:00
cddl Teach DTrace about BTI on arm64 2022-01-19 12:07:35 +00:00
compat linuxkpi: i2c: Add MODULE_DEPEND for iicbus 2022-01-26 10:44:07 +01:00
conf linuxkpi: Add i2c support 2022-01-25 16:15:39 +01:00
contrib zfs: Fix zvol_cdev_open locking 2022-01-26 18:37:52 +00:00
crypto crypto: Add an API supporting curve25519. 2022-01-24 15:27:39 -08:00
ddb ddb: Remove SOFTWARE_SSTEP support 2022-01-07 09:25:33 -07:00
dev hwpmc(4): Fix a typo in a sysctl description 2022-01-26 20:18:57 +01:00
dts add overlay for enabling spi0 on allwinner h3 2022-01-26 11:42:20 +02:00
fs fusefs: Address -Wunused-but-set-variable warnings 2022-01-20 08:25:00 -05:00
gdb gdb(4): Do not use run length encoding for 3-symbol repetitions 2022-01-22 14:46:06 -05:00
geom geom: Add HiFive boot partitions 2022-01-26 10:54:45 -05:00
gnu
i386 exec: Reimplement stack address randomization 2022-01-17 16:12:36 -05:00
isa sys/isa: Use C99 fixed-width integer types. 2021-12-28 09:41:57 -08:00
kern execve: disallow argc == 0 2022-01-26 13:40:27 -06:00
kgssapi
libkern sys/libkern: Use C99 fixed-width integer types. 2021-12-28 09:42:11 -08:00
modules add overlay for enabling spi0 on allwinner h3 2022-01-26 11:42:20 +02:00
net Add definitions for TLS receive tags using the existing send tag infrastructure. 2022-01-26 12:55:00 +01:00
net80211 net80211: ieee80211_dump_node() cosmetics 2022-01-17 00:01:46 +00:00
netgraph domains: make domain_init() initialize only global state 2022-01-03 10:15:22 -08:00
netinet extra_tcp_stacks: Fix two typos in source code comments 2022-01-26 18:02:55 +01:00
netinet6 nd6: use CARP link level address in SLLAO for NS sent out 2022-01-24 21:02:47 -08:00
netipsec IPsec: Use protocol-specific malloc types instead of M_XDATA. 2022-01-24 15:27:39 -08:00
netpfil pf: ensure we don't destroy an uninitialised lock 2022-01-16 09:04:57 +01:00
netsmb
nfs nfs: don't truncate directory cookies to 32-bits in the NFS server 2021-12-15 20:54:57 -07:00
nfsclient
nfsserver
nlm sys/nlm: Use C99 fixed-width integer types. 2021-12-28 09:42:42 -08:00
ofed domains: init with standard SYSINIT(9) or VNET_SYSINIT() 2022-01-03 10:15:22 -08:00
opencrypto opencrypto/xform_*.h: Trim scope of included headers. 2022-01-25 15:21:22 -08:00
powerpc powerpc: enable ice in GENERIC64LE 2022-01-21 02:17:46 +01:00
riscv riscv: fix unused var in page_fault_handler() 2022-01-19 17:21:25 -04:00
rpc sys/rpc: Use C99 fixed-width integer types. 2021-12-28 09:43:15 -08:00
security Thread creation privilege for realtime group 2021-12-15 00:01:58 +02:00
sys geom: Add HiFive boot partitions 2022-01-26 10:54:45 -05:00
teken
tests
tools Revert "syscallarg_t: Add a type for system call arguments" 2022-01-12 23:29:20 +00:00
ufs Avoid unnecessary setting of UFS flag requesting fsck(8) be run. 2022-01-09 16:18:28 -08:00
vm vm_pageout_scans: correct detection of active object 2022-01-22 19:34:32 +02:00
x86 atrtc: Install address space handler for \_SB and its descendant. 2022-01-21 15:32:30 +09:00
xdr sys/xdr: Use C99 fixed-width integer types. 2021-12-28 09:43:26 -08:00
xen Create wrapper for Giant taken for newbus 2021-12-09 17:04:45 -07:00
Makefile Fix 'make cscope' with ALL_ARCH defined 2022-01-07 11:53:52 -04:00