From: Enrico Scholz <enrico.sch...@sigma-chemnitz.de> Calling 'useradd' through pseudo on (at least) Ubuntu 20 creates filesystem objects (.bashrc, .profile) with invalid attributes. It manifests as
| tar: ./home/.../.bashrc: Unknown file type; file ignored or | Copying files into the device: __populate_fs: ignoring entry ".bashrc" | .bashrc: File not found by ext2_lookup while looking up ".bashrc" when building the image. This happens due to a bug in shadow which is caused by clobbering fstatat() results. Signed-off-by: Enrico Scholz <enrico.sch...@sigma-chemnitz.de> --- ...copy_entry-use-temporary-stat-buffer.patch | 39 +++++++++++++++++++ meta/recipes-extended/shadow/shadow.inc | 1 + 2 files changed, 40 insertions(+) create mode 100644 meta/recipes-extended/shadow/files/0001-lib-copydir-copy_entry-use-temporary-stat-buffer.patch diff --git a/meta/recipes-extended/shadow/files/0001-lib-copydir-copy_entry-use-temporary-stat-buffer.patch b/meta/recipes-extended/shadow/files/0001-lib-copydir-copy_entry-use-temporary-stat-buffer.patch new file mode 100644 index 000000000000..d278a4cda3ff --- /dev/null +++ b/meta/recipes-extended/shadow/files/0001-lib-copydir-copy_entry-use-temporary-stat-buffer.patch @@ -0,0 +1,39 @@ +From af4b8cb780587aa736692a3baa76b60474f19c5d Mon Sep 17 00:00:00 2001 +From: Enrico Scholz <enrico.sch...@sigma-chemnitz.de> +Date: Mon, 18 Mar 2024 12:14:21 +0100 +Subject: [PATCH] lib/copydir:copy_entry(): use temporary stat buffer + +There are no guarantees that fstatat() does not clobber the stat +buffer on errors. + +Use a temporary buffer so that the following code sees correct +attributes of the source entry. + +Upstream-Status: Submitted [https://github.com/shadow-maint/shadow/pull/974] + +Signed-off-by: Enrico Scholz <enrico.sch...@sigma-chemnitz.de> +--- + lib/copydir.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +Index: shadow-4.14.2/lib/copydir.c +=================================================================== +--- shadow-4.14.2.orig/lib/copydir.c ++++ shadow-4.14.2/lib/copydir.c +@@ -415,6 +415,7 @@ static int copy_entry (const struct path + { + int err = 0; + struct stat sb; ++ struct stat tmp_sb; + struct link_name *lp; + struct timespec mt[2]; + +@@ -436,7 +437,7 @@ static int copy_entry (const struct path + * If the destination already exists do nothing. + * This is after the copy_dir above to still iterate into subdirectories. + */ +- if (fstatat(dst->dirfd, dst->name, &sb, AT_SYMLINK_NOFOLLOW) != -1) { ++ if (fstatat(dst->dirfd, dst->name, &tmp_sb, AT_SYMLINK_NOFOLLOW) != -1) { + return 0; + } + diff --git a/meta/recipes-extended/shadow/shadow.inc b/meta/recipes-extended/shadow/shadow.inc index 16b99a0b60e8..a164b8347f8c 100644 --- a/meta/recipes-extended/shadow/shadow.inc +++ b/meta/recipes-extended/shadow/shadow.inc @@ -12,6 +12,7 @@ DEPENDS = "virtual/crypt" GITHUB_BASE_URI = "https://github.com/shadow-maint/shadow/releases"; SRC_URI = "${GITHUB_BASE_URI}/download/${PV}/${BP}.tar.gz \ + file://0001-lib-copydir-copy_entry-use-temporary-stat-buffer.patch \ ${@bb.utils.contains('PACKAGECONFIG', 'pam', '${PAM_SRC_URI}', '', d)} \ file://useradd \ " -- 2.44.0
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