[PATCH 0/6] Fix modules.builtin.alias handling

[PATCH 0/6] Fix modules.builtin.alias handling

[Lucas De Marchi]

This should fix 2 bugs reported last week:

- `depmod -n` failing. Like for other binary indexes we just
  skip now

- programs like lspci failing since they don't ignore errors from
  kmod_load_resources() - the new modules.builtin.alias.bin may not
  exist if depmod from kmod 27 wasn't executed for that kernel version.
  Also modules.builtin.modinfo (from where the former is extracted) is
  only available on recent kernel versions. So make this index optional
  for kmod_load_resources() - other parts of the code already assume
  it's optional

Lucas De Marchi (6):
  gitignore: ignore .cache.mk when building modules
  depmod: do not output .bin to stdout
  libkmod: simplify lookup when builtin.modinfo.bin file is missing
  libkmod: fix return error when opening index
  libkmod: allow modules.alias.builtin to be optional
  testsuite: add check for kmod_load_resources

 libkmod/libkmod-index.c                       |  31 ++++++-----
 libkmod/libkmod-index.h                       |   4 +-
 libkmod/libkmod-module.c                      |   8 +--
 libkmod/libkmod.c                             |  50 ++++++++++--------
 testsuite/module-playground/.gitignore        |   1 +
 .../lib/modules/5.6.0/modules.alias           |   1 +
 .../lib/modules/5.6.0/modules.alias.bin       | Bin 0 -> 12 bytes
 .../lib/modules/5.6.0/modules.builtin         |   1 +
 .../lib/modules/5.6.0/modules.builtin.bin     | Bin 0 -> 39 bytes
 .../lib/modules/5.6.0/modules.dep             |   0
 .../lib/modules/5.6.0/modules.dep.bin         | Bin 0 -> 12 bytes
 .../lib/modules/5.6.0/modules.devname         |   1 +
 .../lib/modules/5.6.0/modules.softdep         |   1 +
 .../lib/modules/5.6.0/modules.symbols         |   1 +
 .../lib/modules/5.6.0/modules.symbols.bin     | Bin 0 -> 12 bytes
 testsuite/test-init.c                         |  31 +++++++++++
 tools/depmod.c                                |   6 ++-
 17 files changed, 95 insertions(+), 41 deletions(-)
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols.bin

-- 
2.25.1

[PATCH 1/6] gitignore: ignore .cache.mk when building modules

[Lucas De Marchi]

---
 testsuite/module-playground/.gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testsuite/module-playground/.gitignore b/testsuite/module-playground/.gitignore
index db63fe4..fca12f3 100644
--- a/testsuite/module-playground/.gitignore
+++ b/testsuite/module-playground/.gitignore
@@ -2,6 +2,7 @@
 *.ko
 !mod-simple-*.ko
 !cache/*.ko
+.cache.mk
 *.mod.c
 .tmp_versions
 *.mod
-- 
2.25.1

[PATCH 2/6] depmod: do not output .bin to stdout

[Lucas De Marchi]

index_write() relies on fseek/ftell to manage the position to which we
are write and thus needs the file stream to support it.

Right now when trying to write the index to stdout we fail with:

	depmod: tools/depmod.c:416: index_write: Assertion `initial_offset >= 0' failed.
	Aborted (core dumped)

We have no interest in outputting our index to stdout, so just skip it
like is done with other indexes.

While at it, add/remove some newlines to improve readability.

Reported-by: Yanko Kaneti <yaneti@declera.com>
Fix: b866b2165ae6 ("Lookup aliases in the modules.builtin.modinfo")
---
 tools/depmod.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/depmod.c b/tools/depmod.c
index fbbce10..875e314 100644
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -2408,8 +2408,10 @@ static int output_builtin_alias_bin(struct depmod *depmod, FILE *out)
 	struct index_node *idx;
 	struct kmod_list *l, *builtin = NULL;
 
-	idx = index_create();
+	if (out == stdout)
+		return 0;
 
+	idx = index_create();
 	if (idx == NULL) {
 		ret = -ENOMEM;
 		goto fail;
@@ -2456,7 +2458,9 @@ static int output_builtin_alias_bin(struct depmod *depmod, FILE *out)
 
 	if (count)
 		index_write(idx, out);
+
 	index_destroy(idx);
+
 fail:
 	if (builtin)
 		kmod_module_unref_list(builtin);
-- 
2.25.1

[PATCH 3/6] libkmod: simplify lookup when builtin.modinfo.bin file is missing

[Lucas De Marchi]

When we try to lookup a module and builtin.modinfo.bin is missing, we
would do the right thing because the caller was replacing the return
code with 0 (and the list was not modified).

Make it simpler by allowing the caller to check and differentiate the
errors between module not found and index not found.
---
 libkmod/libkmod-module.c |  8 ++++----
 libkmod/libkmod.c        | 25 +++++++++++--------------
 2 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/libkmod/libkmod-module.c b/libkmod/libkmod-module.c
index 714ee21..76a6dc3 100644
--- a/libkmod/libkmod-module.c
+++ b/libkmod/libkmod-module.c
@@ -577,13 +577,13 @@ KMOD_EXPORT int kmod_module_new_from_lookup(struct kmod_ctx *ctx,
 
 	DBG(ctx, "lookup modules.builtin.modinfo %s\n", alias);
 	err = kmod_lookup_alias_from_kernel_builtin_file(ctx, alias, list);
-	CHECK_ERR_AND_FINISH(err, fail, list, finish);
-
-	if (err == 0) {
+	if (err == -ENOSYS) {
+		/* Optional index missing, try the old one */
 		DBG(ctx, "lookup modules.builtin %s\n", alias);
 		err = kmod_lookup_alias_from_builtin_file(ctx, alias, list);
-		CHECK_ERR_AND_FINISH(err, fail, list, finish);
 	}
+	CHECK_ERR_AND_FINISH(err, fail, list, finish);
+
 
 finish:
 	DBG(ctx, "lookup %s=%d, list=%p\n", alias, err, *list);
diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c
index c9d9e2a..39f58d9 100644
--- a/libkmod/libkmod.c
+++ b/libkmod/libkmod.c
@@ -528,20 +528,17 @@ int kmod_lookup_alias_from_kernel_builtin_file(struct kmod_ctx *ctx,
 						struct kmod_list **list)
 {
 	struct kmod_list *l;
-	int ret = kmod_lookup_alias_from_alias_bin(ctx,
-						KMOD_INDEX_MODULES_BUILTIN_ALIAS,
-						name, list);
-	if (ret > 0) {
-		kmod_list_foreach(l, *list) {
-			struct kmod_module *mod = l->data;
-			kmod_module_set_builtin(mod, true);
-		}
-	} else if (ret == -ENOSYS) {
-		/*
-		 * If the system does not support this yet, then
-		 * there is no need to return an error.
-		 */
-		ret = 0;
+	int ret;
+
+	assert(*list == NULL);
+
+	ret = kmod_lookup_alias_from_alias_bin(ctx,
+					       KMOD_INDEX_MODULES_BUILTIN_ALIAS,
+					       name, list);
+
+	kmod_list_foreach(l, *list) {
+		struct kmod_module *mod = l->data;
+		kmod_module_set_builtin(mod, true);
 	}
 
 	return ret;
-- 
2.25.1

[PATCH 4/6] libkmod: fix return error when opening index

[Lucas De Marchi]

When calling kmod_load_resources() we could end up getting a bogus
return value -ENOMEM due to several other reasons, like the index not
existing. Change index_mm_open() to propagate the failure reason so we
can take actions on it or return to the caller.
---
 libkmod/libkmod-index.c | 31 +++++++++++++++++++------------
 libkmod/libkmod-index.h |  4 ++--
 libkmod/libkmod.c       | 16 ++++++++--------
 3 files changed, 29 insertions(+), 22 deletions(-)

diff --git a/libkmod/libkmod-index.c b/libkmod/libkmod-index.c
index 1f3351a..6a34c8d 100644
--- a/libkmod/libkmod-index.c
+++ b/libkmod/libkmod-index.c
@@ -611,7 +611,7 @@ struct index_value *index_searchwild(struct index_file *in, const char *key)
 static const char _idx_empty_str[] = "";
 
 struct index_mm {
-	struct kmod_ctx *ctx;
+	const struct kmod_ctx *ctx;
 	void *mm;
 	uint32_t root_offset;
 	size_t size;
@@ -739,10 +739,10 @@ static void index_mm_free_node(struct index_mm_node *node)
 	free(node);
 }
 
-struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
-						unsigned long long *stamp)
+int index_mm_open(const struct kmod_ctx *ctx, const char *filename,
+		  unsigned long long *stamp, struct index_mm **pidx)
 {
-	int fd;
+	int fd, err;
 	struct stat st;
 	struct index_mm *idx;
 	struct {
@@ -752,28 +752,32 @@ struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
 	} hdr;
 	void *p;
 
+	assert(pidx != NULL);
+
 	DBG(ctx, "file=%s\n", filename);
 
 	idx = malloc(sizeof(*idx));
 	if (idx == NULL) {
 		ERR(ctx, "malloc: %m\n");
-		return NULL;
+		return -ENOMEM;
 	}
 
 	if ((fd = open(filename, O_RDONLY|O_CLOEXEC)) < 0) {
 		DBG(ctx, "open(%s, O_RDONLY|O_CLOEXEC): %m\n", filename);
+		err = -errno;
 		goto fail_open;
 	}
 
-	if (fstat(fd, &st) < 0)
-		goto fail_nommap;
-	if ((size_t) st.st_size < sizeof(hdr))
+	if (fstat(fd, &st) < 0 || (size_t) st.st_size < sizeof(hdr)) {
+		err = -EINVAL;
 		goto fail_nommap;
+	}
 
-	if ((idx->mm = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0))
-							== MAP_FAILED) {
+	idx->mm = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+	if (idx->mm == MAP_FAILED) {
 		ERR(ctx, "mmap(NULL, %"PRIu64", PROT_READ, %d, MAP_PRIVATE, 0): %m\n",
 							st.st_size, fd);
+		err = -errno;
 		goto fail_nommap;
 	}
 
@@ -785,12 +789,14 @@ struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
 	if (hdr.magic != INDEX_MAGIC) {
 		ERR(ctx, "magic check fail: %x instead of %x\n", hdr.magic,
 								INDEX_MAGIC);
+		err = -EINVAL;
 		goto fail;
 	}
 
 	if (hdr.version >> 16 != INDEX_VERSION_MAJOR) {
 		ERR(ctx, "major version check fail: %u instead of %u\n",
 					hdr.version >> 16, INDEX_VERSION_MAJOR);
+		err = -EINVAL;
 		goto fail;
 	}
 
@@ -800,8 +806,9 @@ struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
 	close(fd);
 
 	*stamp = stat_mstamp(&st);
+	*pidx = idx;
 
-	return idx;
+	return 0;
 
 fail:
 	munmap(idx->mm, st.st_size);
@@ -809,7 +816,7 @@ fail_nommap:
 	close(fd);
 fail_open:
 	free(idx);
-	return NULL;
+	return err;
 }
 
 void index_mm_close(struct index_mm *idx)
diff --git a/libkmod/libkmod-index.h b/libkmod/libkmod-index.h
index 52aebac..db671b0 100644
--- a/libkmod/libkmod-index.h
+++ b/libkmod/libkmod-index.h
@@ -40,8 +40,8 @@ void index_values_free(struct index_value *values);
 
 /* Implementation using mmap */
 struct index_mm;
-struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
-						unsigned long long *stamp);
+int index_mm_open(const struct kmod_ctx *ctx, const char *filename,
+		  unsigned long long *stamp, struct index_mm **pidx);
 void index_mm_close(struct index_mm *index);
 char *index_mm_search(struct index_mm *idx, const char *key);
 struct index_value *index_mm_searchwild(struct index_mm *idx, const char *key);
diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c
index 39f58d9..ab5c1e8 100644
--- a/libkmod/libkmod.c
+++ b/libkmod/libkmod.c
@@ -856,6 +856,7 @@ KMOD_EXPORT int kmod_validate_resources(struct kmod_ctx *ctx)
 KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
 {
 	size_t i;
+	int ret;
 
 	if (ctx == NULL)
 		return -ENOENT;
@@ -871,17 +872,16 @@ KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
 
 		snprintf(path, sizeof(path), "%s/%s.bin", ctx->dirname,
 							index_files[i].fn);
-		ctx->indexes[i] = index_mm_open(ctx, path,
-						&ctx->indexes_stamp[i]);
-		if (ctx->indexes[i] == NULL)
-			goto fail;
+		ret = index_mm_open(ctx, path, &ctx->indexes_stamp[i],
+				    &ctx->indexes[i]);
+		if (ret)
+			break;
 	}
 
-	return 0;
+	if (ret)
+		kmod_unload_resources(ctx);
 
-fail:
-	kmod_unload_resources(ctx);
-	return -ENOMEM;
+	return ret;
 }
 
 /**
-- 
2.25.1

[PATCH 5/6] libkmod: allow modules.alias.builtin to be optional

[Lucas De Marchi]

---
 libkmod/libkmod.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/libkmod/libkmod.c b/libkmod/libkmod.c
index ab5c1e8..43423d6 100644
--- a/libkmod/libkmod.c
+++ b/libkmod/libkmod.c
@@ -855,8 +855,8 @@ KMOD_EXPORT int kmod_validate_resources(struct kmod_ctx *ctx)
  */
 KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
 {
+	int ret = 0;
 	size_t i;
-	int ret;
 
 	if (ctx == NULL)
 		return -ENOENT;
@@ -874,8 +874,17 @@ KMOD_EXPORT int kmod_load_resources(struct kmod_ctx *ctx)
 							index_files[i].fn);
 		ret = index_mm_open(ctx, path, &ctx->indexes_stamp[i],
 				    &ctx->indexes[i]);
-		if (ret)
-			break;
+
+		/*
+		 * modules.builtin.alias are considered optional since it's
+		 * recently added and older installations may not have it;
+		 * we allow failing for any reason
+		 */
+		if (ret) {
+			if (i != KMOD_INDEX_MODULES_BUILTIN_ALIAS)
+				break;
+			ret = 0;
+		}
 	}
 
 	if (ret)
-- 
2.25.1

[PATCH 6/6] testsuite: add check for kmod_load_resources

[Lucas De Marchi]

Make sure we can call kmod_load_resources when we do have all the
mandatory indexes in place.
---
 .../lib/modules/5.6.0/modules.alias           |   1 +
 .../lib/modules/5.6.0/modules.alias.bin       | Bin 0 -> 12 bytes
 .../lib/modules/5.6.0/modules.builtin         |   1 +
 .../lib/modules/5.6.0/modules.builtin.bin     | Bin 0 -> 39 bytes
 .../lib/modules/5.6.0/modules.dep             |   0
 .../lib/modules/5.6.0/modules.dep.bin         | Bin 0 -> 12 bytes
 .../lib/modules/5.6.0/modules.devname         |   1 +
 .../lib/modules/5.6.0/modules.softdep         |   1 +
 .../lib/modules/5.6.0/modules.symbols         |   1 +
 .../lib/modules/5.6.0/modules.symbols.bin     | Bin 0 -> 12 bytes
 testsuite/test-init.c                         |  31 ++++++++++++++++++
 11 files changed, 36 insertions(+)
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep.bin
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols
 create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols.bin

diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias
new file mode 100644
index 0000000..ba76e18
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias
@@ -0,0 +1 @@
+# Aliases extracted from modules themselves.
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias.bin b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias.bin
new file mode 100644
index 0000000000000000000000000000000000000000..7075435f6268c4d815aec093d61e26647666ba76
GIT binary patch
literal 12
TcmdnM{w17&iGh)Ufq@4A6;A>Z

literal 0
HcmV?d00001

diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin
new file mode 100644
index 0000000..1cbec61
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin
@@ -0,0 +1 @@
+kernel/fake_builtin.ko
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin.bin b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin.bin
new file mode 100644
index 0000000000000000000000000000000000000000..0423f039013b88f58bce7a26d4086974e5a8b96a
GIT binary patch
literal 39
qcmdnM{w17&iGfjpfk81bJ2gJ3G&83pGmilX7(oO>TG{~y1|9&t?g(c9

literal 0
HcmV?d00001

diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep
new file mode 100644
index 0000000..e69de29
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep.bin b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep.bin
new file mode 100644
index 0000000000000000000000000000000000000000..7075435f6268c4d815aec093d61e26647666ba76
GIT binary patch
literal 12
TcmdnM{w17&iGh)Ufq@4A6;A>Z

literal 0
HcmV?d00001

diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname
new file mode 100644
index 0000000..58f6d6d
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname
@@ -0,0 +1 @@
+# Device nodes to trigger on-demand module loading.
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep
new file mode 100644
index 0000000..5554ccc
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep
@@ -0,0 +1 @@
+# Soft dependencies extracted from modules themselves.
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols
new file mode 100644
index 0000000..618c345
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols
@@ -0,0 +1 @@
+# Aliases for symbols, used by symbol_request().
diff --git a/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols.bin b/testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols.bin
new file mode 100644
index 0000000000000000000000000000000000000000..7075435f6268c4d815aec093d61e26647666ba76
GIT binary patch
literal 12
TcmdnM{w17&iGh)Ufq@4A6;A>Z

literal 0
HcmV?d00001

diff --git a/testsuite/test-init.c b/testsuite/test-init.c
index 9651280..3a69b43 100644
--- a/testsuite/test-init.c
+++ b/testsuite/test-init.c
@@ -29,6 +29,37 @@
 
 #include "testsuite.h"
 
+static noreturn int test_load_resources(const struct test *t)
+{
+	struct kmod_ctx *ctx;
+	const char *null_config = NULL;
+	int err;
+
+	ctx = kmod_new(NULL, &null_config);
+	if (ctx == NULL)
+		exit(EXIT_FAILURE);
+
+	kmod_set_log_priority(ctx, 7);
+
+	err = kmod_load_resources(ctx);
+	if (err != 0) {
+		ERR("could not load libkmod resources: %s\n", strerror(-err));
+		exit(EXIT_FAILURE);
+	}
+
+	kmod_unref(ctx);
+
+	exit(EXIT_SUCCESS);
+}
+DEFINE_TEST(test_load_resources,
+	    .description = "test if kmod_load_resources works",
+	    .config = {
+		[TC_ROOTFS] = TESTSUITE_ROOTFS "test-init-load-resources/",
+		[TC_UNAME_R] = "5.6.0",
+	    },
+	    .need_spawn = true);
+
+
 static noreturn int test_initlib(const struct test *t)
 {
 	struct kmod_ctx *ctx;
-- 
2.25.1

Re: [PATCH 0/6] Fix modules.builtin.alias handling

[Lucas De Marchi]

All patches here applied.

Lucas De Marchi

On Mon, Mar 09, 2020 at 10:00:23PM -0700, Lucas De Marchi wrote:
>This should fix 2 bugs reported last week:
>
>- `depmod -n` failing. Like for other binary indexes we just
>  skip now
>
>- programs like lspci failing since they don't ignore errors from
>  kmod_load_resources() - the new modules.builtin.alias.bin may not
>  exist if depmod from kmod 27 wasn't executed for that kernel version.
>  Also modules.builtin.modinfo (from where the former is extracted) is
>  only available on recent kernel versions. So make this index optional
>  for kmod_load_resources() - other parts of the code already assume
>  it's optional
>
>Lucas De Marchi (6):
>  gitignore: ignore .cache.mk when building modules
>  depmod: do not output .bin to stdout
>  libkmod: simplify lookup when builtin.modinfo.bin file is missing
>  libkmod: fix return error when opening index
>  libkmod: allow modules.alias.builtin to be optional
>  testsuite: add check for kmod_load_resources
>
> libkmod/libkmod-index.c                       |  31 ++++++-----
> libkmod/libkmod-index.h                       |   4 +-
> libkmod/libkmod-module.c                      |   8 +--
> libkmod/libkmod.c                             |  50 ++++++++++--------
> testsuite/module-playground/.gitignore        |   1 +
> .../lib/modules/5.6.0/modules.alias           |   1 +
> .../lib/modules/5.6.0/modules.alias.bin       | Bin 0 -> 12 bytes
> .../lib/modules/5.6.0/modules.builtin         |   1 +
> .../lib/modules/5.6.0/modules.builtin.bin     | Bin 0 -> 39 bytes
> .../lib/modules/5.6.0/modules.dep             |   0
> .../lib/modules/5.6.0/modules.dep.bin         | Bin 0 -> 12 bytes
> .../lib/modules/5.6.0/modules.devname         |   1 +
> .../lib/modules/5.6.0/modules.softdep         |   1 +
> .../lib/modules/5.6.0/modules.symbols         |   1 +
> .../lib/modules/5.6.0/modules.symbols.bin     | Bin 0 -> 12 bytes
> testsuite/test-init.c                         |  31 +++++++++++
> tools/depmod.c                                |   6 ++-
> 17 files changed, 95 insertions(+), 41 deletions(-)
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.alias.bin
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.builtin.bin
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.dep.bin
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.devname
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.softdep
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols
> create mode 100644 testsuite/rootfs-pristine/test-init-load-resources/lib/modules/5.6.0/modules.symbols.bin
>
>-- 
>2.25.1
>