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hostname: accept an empty hostname to unset transient hostname

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Follow-up for 60e4fb4240b24bdd2d4299d8d844f48093df8807.

Before 60e4fb4240b24bdd2d4299d8d844f48093df8807,
`hostnamectl --transient set-hostname ""` unsets the transient hostname.
But after the commit, it is refused. This fixes the issue.
This commit is contained in:
Yu Watanabe 2021-01-22 10:13:01 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 3e405f28f4
commit f190ac486e
1 changed files with 1 additions and 1 deletions
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2
src/hostname/hostnamed.c
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@ -693,7 +693,7 @@ static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *
/* We always go through with the procedure below without comparing to the current hostname, because
* we might want to adjust hostname source information even if the actual hostname is unchanged. */
if (!hostname_is_valid(name, 0))
if (name && !hostname_is_valid(name, 0))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name);
context_read_etc_hostname(c);