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dracut: fix generated initramfs boot failure under bash 5

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If shebang is set to /bin/sh and /bin/sh is a symlink to /bin/bash,
bash turn on posix mode.

Since bash is upgraded to 5.0, it follows 'IEEE 1003.2 POSIX Shell
Standard', to implement 'functions do not have local traps or options,
and it is not possible to define local variables'

For more detail, see variables.c:push_posix_temp_var in the following commit
http://git.savannah.gnu.org/cgit/bash.git/commit/?id=d233b485e83c3a784b803fb894280773f16f2deb

The IEEE 1003.2 POSIX Shell Standard:
https://www.cs.ait.ac.th/~on/O/oreilly/unix/ksh/appa_02.htm

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Hongxu Jia
2019-06-20 22:56:09 -04:00
committed by Khem Raj
parent b3ae42d56e
commit 4d45ebe7ad
2 changed files with 70 additions and 0 deletions
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meta-initramfs/recipes-devtools/dracut/dracut_git.bb
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@@ -13,6 +13,7 @@ SRCREV = "225e4b94cbdb702cf512490dcd2ad9ca5f5b22c1"
SRC_URI = "git://git.kernel.org/pub/scm/boot/dracut/dracut.git;protocol=http \
file://0001-util.h-include-sys-reg.h-when-libc-glibc.patch \
file://0001-dracut.sh-improve-udevdir.patch \
file://0001-set-viriable-_drv-not-local.patch \
"
DEPENDS += "kmod"