dasharo/systemd
0
0
Fork 0
mirror of https://github.com/Dasharo/systemd.git synced 2026-03-06 15:02:31 -08:00
Code Issues Packages Projects Releases Wiki Activity

proc-cmdline: allow backslash escapes when parsing /proc/cmdline

Browse Source 
So far when parsing /proc/cmdline we'd consider backslashes as
mechanisms for escaping whitepace or quotes. This changes things so that
they are retained as they are instead. The kernel itself doesn't allow such
escaping, and hence we shouldn't do so either (see lib/cmdline.c in the
kernel sources; it does support "" quotes btw).

This fix is useful to allow specifying backslash escapes in the "root="
cmdline option to be passed through to systemd-fstab-generator. Example:

    root=/dev/disk/by-partlabel/Root\x20Partition

Previously we'd eat up the "\" so that we'd then look for a device
/dev/disk/by-partlabel/Rootx20Partition which never shows up.
This commit is contained in:
Lennart Poettering
2021-04-06 11:45:47 +02:00
parent 29d898cc7b
commit d997861ea7
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/basic/proc-cmdline.c
View File

@@ -47,7 +47,7 @@ static int proc_cmdline_extract_first(const char **p, char **ret_word, ProcCmdli
_cleanup_free_ char *word = NULL;
const char *c;
r = extract_first_word(&q, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RELAX);
r = extract_first_word(&q, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RELAX|EXTRACT_RETAIN_ESCAPE);
if (r < 0)
return r;
if (r == 0)