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nuttx/libs/libc
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Xiang Xiao fa1bbce9c9 libc/stdio: allocate a buffer in getdelim() when *lineptr is NULL 
POSIX requires getdelim()/getline() to allocate a new buffer whenever
*lineptr is NULL, regardless of the value of *n.  The previous code read
the buffer size from *n unconditionally and only fell back to the initial
size when *n was zero, so a caller that passes *lineptr == NULL together
with an uninitialized (non-zero) *n caused lib_malloc() to be invoked with
that garbage size and typically fail with ENOMEM.

Treat a NULL *lineptr the same as a zero *n: (re)allocate from the known
BUFSIZE_INIT and ignore the untrusted *n.  This matches the glibc
behaviour that portable code relies on (for example toybox grep, which
calls getdelim() with an uninitialized size variable).

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2026-09-23 12:52:09 +08:00
..
aio libc/aio: loop in aio_suspend() until a listed request completes 2026-09-14 17:12:49 -03:00
assert lib_stackchk.c: a duplicate implementation error reported during compilation 2026-02-02 13:22:07 +08:00
audio include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
builtin libc/builtin: support per-application priority/stacksize under KERNEL build. 2026-07-13 15:23:39 -03:00
ctype
dirent libs/libc/dirent: preserve errno on readdir() end-of-directory 2026-06-02 23:34:25 +08:00
dlfcn libc/dlfcn: Count opens so a library can be shared. 2026-08-04 11:12:49 -03:00
elf libc/elf: Always free the module symbol table on removal. 2026-09-22 13:29:57 +08:00
errno
eventfd
fdt cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
fixedmath !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
gdbstub arch/arm64: fix backtrace register access and gdbstub config guard 2026-01-16 08:55:47 -03:00
gnssutils cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
grp libs/libc/grp: fix getgrbuf_r() pointer-alignment padding 2026-08-14 10:20:52 +08:00
hex2bin include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
inttypes !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
libgen
locale style/FAR: remove FAR qualifier 2025-11-10 10:56:29 +01:00
lzf !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
machine libs/libc/machine/arm: Relocate FDPIC function descriptors. 2026-09-13 16:03:32 -03:00
misc nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
net include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
netdb libs/libc/netdb: Size an answer header by its header, not by its union. 2026-08-08 15:02:15 -03:00
obstack include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
pthread nuttx/atomic: replace atomic_fetch_xxx with atomic_xxx just like zephyr 2026-08-24 13:20:45 +08:00
pwd sched: add supplementary group IDs (setgroups/getgroups/initgroups) 2026-08-12 16:06:03 -03:00
queue
regex libs/libc/regex: remove logically dead code in regcomp.c 2026-01-24 19:28:56 +08:00
sched include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
search libc/search: add foreach api for hcreate_data 2025-12-25 09:39:03 +08:00
semaphore sched/semaphore: Keep a negative task id out of the mutex holder. 2026-08-09 10:05:30 +08:00
signal sched/signal: Add support for disabling all signal functions 2026-01-18 08:24:13 -03:00
spawn spawn: allow zero stacksize/priority to use binary loader defaults 2026-07-15 12:24:44 -03:00
stdio libc/stdio: allocate a buffer in getdelim() when *lineptr is NULL 2026-09-23 12:52:09 +08:00
stdlib libc/atexit: honor registrations made during exit processing 2026-09-14 18:52:46 -03:00
stream libc/stream: Check lowout bounds before access 2026-07-06 09:02:22 +02:00
string libs/libc/string: Copy and compare by words when pointers agree on alignment. 2026-08-24 12:02:02 +08:00
symtab libs/libc/symtab: fix bogus symbol size under SYMTAB_ORDEREDBYNAME 2026-08-05 21:51:25 +08:00
syslog
termios drivers/serial: add job-control TTY ioctls and libc wrappers 2026-06-23 16:26:53 -03:00
time libc/time: Fix POSIX timezone string parsing. 2026-07-25 19:54:18 +08:00
tls libc/tls: update preprocessor condition comment to match implementation 2026-01-31 02:49:10 +08:00
uio
unistd fs/aio: add configurable AIO_LISTIO_MAX limit 2026-09-14 17:12:49 -03:00
userfs include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
uuid
wchar
wctype
wqueue libc/wqueue: use the uninterruptible wait helper 2026-09-04 23:02:48 +08:00
zoneinfo tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
.gitignore
CMakeLists.txt
Kconfig
libc.csv sched/pthread: Implement pthread_sigqueue 2026-09-21 14:53:26 +08:00
libc.h libs/libc/string: Copy and compare by words when pointers agree on alignment. 2026-08-24 12:02:02 +08:00
limits_check.c libs/libc: add limits checks 2026-07-02 09:02:21 -03:00
Makefile tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00