freebsd-dev/lib/libc
Mark Johnston 5619d49e07 libc/nss: Restore iterator state when doing passwd/group lookups
The getpwent(3) and getgrent(3) implementations maintain some internal
iterator state.  Interleaved calls to functions which do passwd/group
lookups using a key, such as getpwnam(3), would in some cases clobber
this state, causing a subsequent getpwent() or getgrent() call to
restart iteration from the beginning of the database or to terminate
early.  This is particularly troublesome in programming environments
where execution of green threads is interleaved within a single OS
thread.

Take care to restore any iterator state following a keyed lookup.  The
"files" provider for the passwd database was already handling this
correctly, but "compat" was not, and both providers had this problem
when accessing the group database.

PR:		252094
Submitted by:	Viktor Dukhovni <ietf-dane@dukhovni.org>
MFC after:	1 month
2021-01-21 14:30:19 -05:00
..
aarch64 Fix initial exec TLS mode for dynamically loaded shared objects. 2019-03-29 17:52:57 +00:00
amd64 amd64: sync up libc memcmp with the kernel version (r357309) 2020-01-30 19:57:05 +00:00
arm arm/ffs.S: remove stale comment. 2019-12-28 02:11:41 +00:00
capability Fix a few mandoc issues 2020-10-09 19:12:44 +00:00
compat-43 Adjust history, info source from v1's manuals 2019-09-04 13:44:46 +00:00
db Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
gdtoa Remove sparc64 specific parts of libc. 2020-02-26 18:55:09 +00:00
gen libc/nss: Restore iterator state when doing passwd/group lookups 2021-01-21 14:30:19 -05:00
gmon mcount: tidy up ANSIfication 2018-10-20 22:39:35 +00:00
i386 remove obsolete i386 MD memchr implementation 2019-09-25 16:49:22 +00:00
iconv Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
include libthr: wrap pdfork(2), same as fork(2). 2021-01-11 22:59:52 +02:00
inet libc: fix cases of undefined behavior. 2018-08-07 15:24:19 +00:00
isc SPDX: more ISC-related files. 2017-12-08 17:52:53 +00:00
locale libc: Fix most issues reported by mandoc 2020-12-19 14:54:28 +00:00
md
mips mips: fix some mcount nits 2019-09-02 01:55:55 +00:00
nameser Bounds check again after advancing cp, otherwise we have a possible 2019-09-05 19:35:30 +00:00
net libc: Fix most issues reported by mandoc 2020-12-19 14:54:28 +00:00
nls Implement strerror_l(). 2020-12-16 09:02:09 +00:00
posix1e Drop "All rights reserved" from all my stuff. This includes 2020-10-28 13:46:11 +00:00
powerpc Add CFI start/end proc directives to arm64, i386, and ppc 2020-12-05 00:33:28 +00:00
powerpc64 Add CFI start/end proc directives to arm64, i386, and ppc 2020-12-05 00:33:28 +00:00
powerpcspe [PowerPC] Implement VDSO timebase access on powerpc* 2020-09-08 03:00:31 +00:00
quad Add casts and L suffixes to libc quad support, to work around various 2020-02-17 20:14:59 +00:00
regex libc: regex: rework unsafe pointer arithmetic 2021-01-08 13:58:35 -06:00
resolv Rather than using the legacy IP struct fields in the union for the 2019-06-04 20:53:35 +00:00
riscv libc: Provide sub fp(s|g)etmask() implementations for RISC-V 2020-08-03 12:48:51 +00:00
rpc Fix -Wvoid-pointer-to-enum-cast warnings. 2020-04-15 18:15:58 +00:00
secure Remove the SYMVER build option. 2020-04-30 22:08:40 +00:00
softfloat Add implementations for clog(3), clogf(3), and clog(3). 2018-05-13 09:54:34 +00:00
stdio tmpnam(3): Also mention tmpfile in the ENVIRONMENT section 2020-08-07 16:20:07 +00:00
stdlib libc: Fix null pointer arithmetic warning in mergesort 2021-01-20 09:56:01 +00:00
stdtime strptime: make %k and %l specifiers match their description in 2018-11-03 23:37:13 +00:00
string strerror.3: Fix whitespace issue introduced in r368714 2020-12-18 22:10:17 +00:00
sys lio_listio: validate aio_lio_opcode 2021-01-11 19:53:01 -07:00
tests libc/nss tests: Fix getpw and getgr single-pass tests 2021-01-21 14:30:19 -05:00
uuid libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
x86 x86: switch vdso TSC timecounter to RDTSCP on AMD Zen CPUs 2021-01-21 14:55:31 +02:00
xdr typo: s/impelmentation/implementation/. 2020-02-07 15:14:29 +00:00
yp Increase the size of the send and receive buffers for YP client rpc 2019-09-16 06:42:01 +00:00
libc_nossp.ldscript
libc.ldscript
Makefile [PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le. 2020-09-23 00:21:51 +00:00
Makefile.depend Update Makefile.depend files 2019-12-11 17:37:53 +00:00
Makefile.depend.options Update libssp paths in various Makefile.depend* files 2020-01-06 18:15:55 +00:00
Versions.def Create namespace for the symbols added during 13-CURRENT cycle. 2018-11-12 19:12:14 +00:00