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useradd: assume uid 0 == root as fallback

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In absence of /etc/passwd, eg when bootstrapping a chroot, resolving
uid 0 to a name may not work. Therefore just assume "root".
This commit is contained in:
Ludwig Nussel 2021-11-30 17:14:14 +01:00
parent dce030ffb8
commit d12d300c98
1 changed files with 2 additions and 2 deletions
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4
src/useradd.c
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@ -2507,14 +2507,14 @@ int main (int argc, char **argv)
{
struct passwd *pampw;
pampw = getpwuid (getuid ()); /* local, no need for xgetpwuid */
if (pampw == NULL) {
if (pampw == NULL && getuid ()) {
fprintf (stderr,
_("%s: Cannot determine your user name.\n"),
Prog);
fail_exit (1);
}
retval = pam_start ("useradd", pampw->pw_name, &conv, &pamh);
retval = pam_start ("useradd", pampw?pampw->pw_name:"root", &conv, &pamh);
}
if (PAM_SUCCESS == retval) {