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getty: improve argument handling when launching login

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Add explicit argument separator before username to ensure correct
parsing of the login command regardless of username format.  This
follows best practices for command execution and prevents unexpected
behavior when processing special characters in usernames.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg committed 2025-03-18 13:18:10 +01:00
1 parent 1480657982
commit 6528628b5c
1 file changed
+2 -2
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src/getty.c
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@@ -312,9 +312,9 @@ static int exec_login(char *name)
struct stat st;
if (passenv)
execl(_PATH_LOGIN, _PATH_LOGIN, "-p", name, NULL);
execl(_PATH_LOGIN, _PATH_LOGIN, "-p", "--", name, NULL);
else
execl(_PATH_LOGIN, _PATH_LOGIN, name, NULL);
execl(_PATH_LOGIN, _PATH_LOGIN, "--", name, NULL);
/*
* Failed to exec login, should not happen on normal systems.