From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 7 Jun 2018 00:44:51 +0200 Subject: [PATCH] Skip leading spaces on BLS field values The GRUB 2 blscfg command doesn't parse correctly the BLS fields if these have extra spaces before the field values. For example, the following BLS fragment generates a wrong menu entry due using spaces to tabulate values: title Fedora 28 (Twenty Eight) version 4.16.13-300.fc28.x86_64 machine-id e5c131dfee3249cbb9891c2641d8e350 linux /vmlinuz-4.16.13-300.fc28.x86_64 initrd /initramfs-4.16.13-300.fc28.x86_64.img options root=/dev/mapper/fedora-root ro Wrong generated menu entry: load_video set gfx_payload=keep insmod gzio linux ($root) /vmlinuz-4.16.13-300.fc28.x86_64 root=/dev/mapper/fedora-root ro initrd ($root) /initramfs-4.16.13-300.fc28.x86_64.img Correct menu entry after the fix: load_video set gfx_payload=keep insmod gzio linux ($root)/vmlinuz-4.16.13-300.fc28.x86_64 root=/dev/mapper/fedora-root ro initrd ($root)/initramfs-4.16.13-300.fc28.x86_64.img Resolves: rhbz#1588184 Signed-off-by: Javier Martinez Canillas --- grub-core/commands/blscfg.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/grub-core/commands/blscfg.c b/grub-core/commands/blscfg.c index fb08d8e4c..831cdcacc 100644 --- a/grub-core/commands/blscfg.c +++ b/grub-core/commands/blscfg.c @@ -448,7 +448,11 @@ static int read_entry ( separator[0] = '\0'; - rc = bls_add_keyval (entry, buf, separator+1); + do { + separator++; + } while (*separator == ' ' || *separator == '\t'); + + rc = bls_add_keyval (entry, buf, separator); grub_free (buf); if (rc < 0) break;