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13.120.1 getutmp

Documentation:

• https://www.gnu.org/software/libc/manual/html_node/XPG-Functions.html,
• man getutmp.

Gnulib module: —

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

• This function is missing on some platforms: FreeBSD 14.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11, Cygwin 2.9, mingw, MSVC 14, Android 9.0.
• On some platforms, this function does not support timestamps past the year 2038: glibc 2.38 on 32-bit platforms like x86 and ARM where time_t was historically 32 bits.
• On some platforms, this function misbehaves if the year2038 or year2038-recommended modules are used and the program is configured without the --disable-year2038 option. The readutmp module works around this problem: glibc 2.38 on 32-bit platforms like x86 and ARM where time_t was historically 32 bits. See Avoiding the year 2038 problem.