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argv-util: also update program_invocation_short_name

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Our logging uses program_invocation_short_name. Without this patch,
logs from forked client may become broken; spuriously truncated or
the short invocation name is not completely shown in the log.

(cherry picked from commit dd15e4cb57)
(cherry picked from commit ce4726468d)
(cherry picked from commit 7a862d9d1a)
This commit is contained in:
Yu Watanabe 2023-02-03 18:29:36 +09:00 committed by Luca Boccassi
parent 53be27c44b
commit 9fbbd7bf28
1 changed files with 4 additions and 0 deletions
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4
src/basic/process-util.c
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@ -368,6 +368,10 @@ int rename_process(const char name[]) {
strncpy(program_invocation_name, name, k); strncpy(program_invocation_name, name, k);
if (l > k) if (l > k)
truncated = true; truncated = true;
/* Also update the short name. */
char *p = strrchr(program_invocation_name, '/');
program_invocation_short_name = p ? p + 1 : program_invocation_name;
} }
/* Third step, completely replace the argv[] array the kernel maintains for us. This requires privileges, but /* Third step, completely replace the argv[] array the kernel maintains for us. This requires privileges, but