diff options
| author | Nicolas Belin <[email protected]> | 2024-12-17 14:29:10 +0100 |
|---|---|---|
| committer | Mattijs Korpershoek <[email protected]> | 2024-12-18 14:04:23 +0100 |
| commit | 9e5fad0f792539ae4258bc116bf408bb6faf7e82 (patch) | |
| tree | a6ffac4ff643839fba128b16549f2e4fbbe1ca0f /boot | |
| parent | fd8b44a81be55b33c7defbe96a1ddd79ed286eb4 (diff) | |
boot: android: rework bootargs concatenation
Rework the bootargs concatenation allocating more accurately
the length that is needed.
Do not forget an extra byte for the null termination byte as,
in some cases, the allocation was 1 byte short.
Fixes: 86f4695b ("image: Fix Android boot image support")
Signed-off-by: Nicolas Belin <[email protected]>
Reviewed-by: Mattijs Korpershoek <[email protected]>
Link: https://lore.kernel.org/r/20241217-fix-bootargs-concatenation-v2-3-b2fd7cf4e130@baylibre.com
Signed-off-by: Mattijs Korpershoek <[email protected]>
Diffstat (limited to 'boot')
| -rw-r--r-- | boot/image-android.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/boot/image-android.c b/boot/image-android.c index 362a5c7435a..61ac312db7a 100644 --- a/boot/image-android.c +++ b/boot/image-android.c @@ -287,37 +287,40 @@ int android_image_get_kernel(const void *hdr, kernel_addr, DIV_ROUND_UP(img_data.kernel_size, 1024)); int len = 0; + char *bootargs = env_get("bootargs"); + + if (bootargs) + len += strlen(bootargs); + if (*img_data.kcmdline) { printf("Kernel command line: %s\n", img_data.kcmdline); - len += strlen(img_data.kcmdline); + len += strlen(img_data.kcmdline) + (len ? 1 : 0); /* +1 for extra space */ } if (*img_data.kcmdline_extra) { printf("Kernel extra command line: %s\n", img_data.kcmdline_extra); - len += strlen(img_data.kcmdline_extra); + len += strlen(img_data.kcmdline_extra) + (len ? 1 : 0); /* +1 for extra space */ } - char *bootargs = env_get("bootargs"); - if (bootargs) - len += strlen(bootargs); - - char *newbootargs = malloc(len + 2); + char *newbootargs = malloc(len + 1); /* +1 for the '\0' */ if (!newbootargs) { puts("Error: malloc in android_image_get_kernel failed!\n"); return -ENOMEM; } - *newbootargs = '\0'; + *newbootargs = '\0'; /* set to Null in case no components below are present */ - if (bootargs) { + if (bootargs) strcpy(newbootargs, bootargs); - strcat(newbootargs, " "); - } - if (*img_data.kcmdline) + if (*img_data.kcmdline) { + if (*newbootargs) /* If there is something in newbootargs, a space is needed */ + strcat(newbootargs, " "); strcat(newbootargs, img_data.kcmdline); + } if (*img_data.kcmdline_extra) { - strcat(newbootargs, " "); + if (*newbootargs) /* If there is something in newbootargs, a space is needed */ + strcat(newbootargs, " "); strcat(newbootargs, img_data.kcmdline_extra); } |