| Message ID | 3914b427de4886dee28dedbfc1fdf7aa64b612e9.1622597775.git.josh@joshtriplett.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | b508d5fb69c2211a1b860fc058aafbefc3b3c3cd |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: ipconfig: Don't override command-line hostnames or domains | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Guessed tree name to be net-next |
| netdev/subject_prefix | warning | Target tree name not specified in the subject |
| netdev/cc_maintainers | success | CCed 5 of 5 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 1 this patch: 1 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | warning | CHECK: spaces preferred around that '+' (ctx:VxV) WARNING: line length of 83 exceeds 80 columns |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 1 this patch: 1 |
| netdev/header_inline | success | Link |
Hello: This patch was applied to netdev/net.git (refs/heads/master): On Tue, 1 Jun 2021 18:38:41 -0700 you wrote: > If the user specifies a hostname or domain name as part of the ip= > command-line option, preserve it and don't overwrite it with one > supplied by DHCP/BOOTP. > > For instance, ip=::::myhostname::dhcp will use "myhostname" rather than > ignoring and overwriting it. > > [...] Here is the summary with links: - net: ipconfig: Don't override command-line hostnames or domains https://git.kernel.org/netdev/net/c/b508d5fb69c2 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index bc2f6ca97152..816d8aad5a68 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -886,7 +886,7 @@ static void __init ic_bootp_send_if(struct ic_device *d, unsigned long jiffies_d /* - * Copy BOOTP-supplied string if not already set. + * Copy BOOTP-supplied string */ static int __init ic_bootp_string(char *dest, char *src, int len, int max) { @@ -935,12 +935,15 @@ static void __init ic_do_bootp_ext(u8 *ext) } break; case 12: /* Host name */ - ic_bootp_string(utsname()->nodename, ext+1, *ext, - __NEW_UTS_LEN); - ic_host_name_set = 1; + if (!ic_host_name_set) { + ic_bootp_string(utsname()->nodename, ext+1, *ext, + __NEW_UTS_LEN); + ic_host_name_set = 1; + } break; case 15: /* Domain name (DNS) */ - ic_bootp_string(ic_domain, ext+1, *ext, sizeof(ic_domain)); + if (!ic_domain[0]) + ic_bootp_string(ic_domain, ext+1, *ext, sizeof(ic_domain)); break; case 17: /* Root path */ if (!root_server_path[0])
If the user specifies a hostname or domain name as part of the ip= command-line option, preserve it and don't overwrite it with one supplied by DHCP/BOOTP. For instance, ip=::::myhostname::dhcp will use "myhostname" rather than ignoring and overwriting it. Fix the comment on ic_bootp_string that suggests it only copies a string "if not already set"; it doesn't have any such logic. Signed-off-by: Josh Triplett <josh@joshtriplett.org> --- net/ipv4/ipconfig.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)