44 lines
1.4 KiB
Diff
44 lines
1.4 KiB
Diff
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This squashes 2 consecutive upstream gnulib commits
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to fix gnulib seg.faults if there is no session:
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https://debbugs.gnu.org/cgi/bugreport.cgi?bug=65617
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Upstream gnulib commit 3af1d7b0ce3a8e3ae565e7cea10cee6fd7cb8109
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2023-08-31 Bruno Haible <bruno@clisp.org>
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readutmp: Fix memory leak introduced by last commit.
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* lib/readutmp.c (read_utmp_from_systemd): If num_sessions == 0 and
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sessions != NULL, do call free (sessions).
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Upstream gnulib commit 1e6a26f9312bb47e070f94b17b14dc1a6ffbb74f
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2023-08-30 Paul Eggert <eggert@cs.ucla.edu>
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readutmp: fix core dump if --enable-systemd
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Problem reported by Thorsten Kukuk <https://bugs.gnu.org/65617>.
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* lib/readutmp.c (read_utmp_from_systemd):
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Don’t assume session_ptr != NULL if num_sessions == 0.
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In practice it can be null, and the man page OKs this behavior.
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---
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lib/readutmp.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletion(-)
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diff --git a/lib/readutmp.c b/lib/readutmp.c
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index 0173b7e0c1..e99158677c 100644
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--- a/lib/readutmp.c
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+++ b/lib/readutmp.c
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@@ -795,7 +795,7 @@ read_utmp_from_systemd (idx_t *n_entries, STRUCT_UTMP **utmp_buf, int options)
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{
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char **sessions;
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int num_sessions = sd_get_sessions (&sessions);
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- if (num_sessions >= 0)
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+ if (num_sessions >= 0 && sessions != NULL)
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{
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char **session_ptr;
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for (session_ptr = sessions; *session_ptr != NULL; session_ptr++)
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--
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2.42.0
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