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initrd: allow specifying the net mask in form of a prefix

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This is not documented in dracut.cmdline(7), however it seems to have
worked and has users and Red Hat even seems to recommend this (thanks to
Dan Horak for the pointers):

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/installation_guide/chap-installer-booting-ipl-s390
https://bugzilla.redhat.com/show_bug.cgi?id=1725872
(cherry picked from commit 390d79079e)
This commit is contained in:
Lubomir Rintel 2019-07-02 09:45:22 +02:00
parent c0b2950282
commit fe803a577c
1 changed files with 5 additions and 3 deletions
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8
src/initrd/nmi-cmdline-reader.c
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@ -270,11 +270,13 @@ parse_ip (GHashTable *connections, const char *sysfs_dir, char *argument)
if (netmask && *netmask) {
NMIPAddr addr;
if (nm_utils_parse_inaddr_bin (AF_INET, netmask, NULL, &addr)) {
if (nm_utils_parse_inaddr_bin (AF_INET, netmask, NULL, &addr))
client_ip_prefix = nm_utils_ip4_netmask_to_prefix (addr.addr4);
} else {
else
client_ip_prefix = _nm_utils_ascii_str_to_int64 (netmask, 10, 0, 32, -1);
if (client_ip_prefix == -1)
_LOGW (LOGD_CORE, "Invalid IP mask: %s", netmask);
}
}
/* Static IP configuration might be present. */