The resulting environment was dependend of the build machines'
filesystem, i.e. the order in which readdir returns dirents depends on
the filesystem implementation.
Use the new flag in scripts/bareboxenv.c for generating a reproducible
built-in environment.
Signed-off-by: Florian Bäuerle <florian.baeuerle@xxxxxxxxxxxx>
---
common/environment.c | 8 ++++++--
include/envfs.h | 1 +
scripts/bareboxenv.c | 2 +-
3 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/common/environment.c b/common/environment.c
index 56a030eda..cea55f313 100644
--- a/common/environment.c
+++ b/common/environment.c
@@ -257,6 +257,7 @@ int envfs_save(const char *filename, const char *dirname, unsigned flags)
void *buf = NULL, *wbuf;
struct envfs_entry *env;
const char *defenv_path = default_environment_path_get();
+ int recursive_flags = ACTION_RECURSE;
if (!filename)
filename = defenv_path;
@@ -276,10 +277,13 @@ int envfs_save(const char *filename, const char *dirname, unsigned flags)
if (flags & ENVFS_FLAGS_FORCE_BUILT_IN) {
size = 0; /* force no content */
} else {
+ if (flags & ENVFS_FLAGS_SORTED)
+ recursive_flags |= ACTION_SORT;
+
/* first pass: calculate size */
- recursive_action(dirname, ACTION_RECURSE, file_action,
+ recursive_action(dirname, recursive_flags, file_action,
NULL, &data, 0);
- recursive_action("/.defaultenv", ACTION_RECURSE,
+ recursive_action("/.defaultenv", recursive_flags,
file_remove_action, NULL, &data, 0);
size = 0;
diff --git a/include/envfs.h b/include/envfs.h
index 27c4b42c6..fa12c60a8 100644
--- a/include/envfs.h
+++ b/include/envfs.h
@@ -45,6 +45,7 @@ struct envfs_super {
uint16_t future; /* reserved for future use */
uint32_t flags; /* feature flags */
#define ENVFS_FLAGS_FORCE_BUILT_IN (1 << 0)
+#define ENVFS_FLAGS_SORTED (1 << 1)
uint32_t sb_crc; /* crc for the superblock */
};
diff --git a/scripts/bareboxenv.c b/scripts/bareboxenv.c
index e95bdeaa5..c27e78e94 100644
--- a/scripts/bareboxenv.c
+++ b/scripts/bareboxenv.c
@@ -136,7 +136,7 @@ int main(int argc, char *argv[])
int opt;
int save = 0, load = 0, pad = 0, err = 0, fd;
char *filename = NULL, *dirname = NULL;
- unsigned envfs_flags = 0;
+ unsigned envfs_flags = ENVFS_FLAGS_SORTED;
int verbose = 0;
while((opt = getopt(argc, argv, "slp:vz")) != -1) {
--
2.19.2
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