55ae0e923
Lauri Kasanen
2011-01-31
Subject
df,find_mount_point: optionally don't ignore rootfs
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coreutils/df.c+1 -1
| @@ -160,7 +160,7 @@ int df_main(int argc UNUSED_PARAM, char **argv) | |
| } | |
| /* GNU coreutils 6.10 skips certain mounts, try to be compatible. */ | |
| - | if (strcmp(device, "rootfs") == 0) |
| + | if (ENABLE_FEATURE_SKIP_ROOTFS && strcmp(device, "rootfs") == 0) |
| continue; | |
| #ifdef WHY_WE_DO_IT_FOR_DEV_ROOT_ONLY | |
libbb/Config.src+19 -0
| @@ -161,6 +161,25 @@ config FEATURE_COPYBUF_KB | |
| Bigger buffers will be allocated with mmap, with fallback to 4 kb | |
| stack buffer if mmap fails. | |
| + | config FEATURE_SKIP_ROOTFS |
| + | bool "Skip rootfs in mount table" |
| + | default y |
| + | help |
| + | Ignore rootfs entry in mount table. |
| + | |
| + | In Linux, kernel has a special filesystem, rootfs, which is initially |
| + | mounted on /. It contains initramfs data, if kernel is configured |
| + | to have one. Usually, another file system is mounted over / early |
| + | in boot process, and therefore most tools which manipulate |
| + | mount table, such as df, will skip rootfs entry. |
| + | |
| + | However, some systems do not mount anything on /. |
| + | If you need to configure busybox for one of these systems, |
| + | you may find useful to turn this option off to make df show |
| + | initramfs statistic. |
| + | |
| + | Otherwise, choose Y. |
| + | |
| config MONOTONIC_SYSCALL | |
| bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" | |
| default n | |
libbb/find_mount_point.c+1 -1
| @@ -43,7 +43,7 @@ struct mntent* FAST_FUNC find_mount_point(const char *name, int subdir_too) | |
| /* rootfs mount in Linux 2.6 exists always, | |
| * and it makes sense to always ignore it. | |
| * Otherwise people can't reference their "real" root! */ | |
| - | if (strcmp(mountEntry->mnt_fsname, "rootfs") == 0) |
| + | if (ENABLE_FEATURE_SKIP_ROOTFS && strcmp(mountEntry->mnt_fsname, "rootfs") == 0) |
| continue; | |
| if (strcmp(name, mountEntry->mnt_dir) == 0 | |