src/lib/libc/stdio, branch releng/14.4

lib: Fix calls that naively set F_SETFD.

2025-08-25T13:57:56Z

With the recent inclusion of the FD_CLOFORK and FD_RESOLVE_BENEATH flags, we must avoid clearing them when setting only FD_CLOEXEC. Signed-off-by: Ricardo Branco Reviewed by: kib, markj MFC after: 1 month Pull Request: https://github.com/freebsd/freebsd-src/pull/1766 (cherry picked from commit 8768b60de16a3d72a8783ec1241a711a782a36a9)

stdio: Fix bug in integer-parsing FSM

2025-08-14T14:00:09Z

If we encounter a zero in the havezero state, we should assume octal, just like we would if we encountered any other digit below 8. MFC after: 1 week PR: 288440 Fixes: d9dc1603d6e4 ("libc: Implement N2630.") Reviewed by: mandree Differential Revision: https://reviews.freebsd.org/D51832 (cherry picked from commit 602e98dd35ea5041b800fb56a2b1ac34f6649310)

libc/stdio: Increase BUF in vfprintf.c and vfwprintf.c

2025-03-26T01:28:39Z

With the %b format specifier we need enough space to write a uintmax_t in binary. Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/1400 (cherry picked from commit d4f9e326393e3298062a58338e2c94ef6baff8b5)

fgets.3: document gets_s() __STDC_WANT_LIB_EXT1__

2024-12-27T15:48:27Z

This matches the man page for qsort_s(). PR: 281828 Signed-off-by: Graham Percival Sponsored by: Tarsnap Backup Inc. (cherry picked from commit d0a3fd34a05794bc5cbf48709001a78e9f85169a)

fileno(3): set errno when returning -1

2024-12-03T00:39:22Z

PR: 283014 (cherry picked from commit 7cd756ff4fe7e65a9a3f588904998bf6f4b37623)

stdio(3): correct summary information for fileno(3)

2024-12-03T00:39:22Z

(cherry picked from commit 35ac34a23bc0e54eb2a2314b906c6e7769dee7f0)

libc: indicate existing functions that are POSIX 2024

2024-11-21T00:45:07Z

Reviewed by: brooks, imp Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D47581 (cherry picked from commit dfa0ac74c2fbc1cde3e8cdb1ab9fe5cbb90a9b16)

libc: fix access mode tests in fmemopen(3)

2024-10-29T19:11:38Z

Previously a stream opened as read-only could be written to. Add a test case for the fix. Also correct another incorrect access mode check that worked by accident, and improve the tests for that. PR: 281953 Reported by: Erkki Moorits, fuz Reviewed by: fuz, khng (earlier) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D47265 (cherry picked from commit 0953460ce149e6f384aafbcb1e6213dfbf8f6a16) (cherry picked from commit 6b9f7133aba44189d9625c352bc2c2a59baf18ef)

printf(): Save errno earlier.

2024-10-06T09:12:49Z

The manual page says %m is replaced with “the string representation of the error code stored in the errno variable at the beginning of the call”. However, we don't actually save `errno` until fairly late in `__vfprintf()`. Make sure it is saved before we do anything that might perturb `errno`. MFC after: 1 week Reviewed by: kevans Differential Revision: https://reviews.freebsd.org/D46718 (cherry picked from commit 74f1007fcc838501c74a633792c3f01833bf65e1)

libc printf_render_errno(): do not use strerror()

2024-04-30T00:48:10Z

(cherry picked from commit aa66995b4c804cbb579f71645d97fe282a798bfc)