[systemd-devel] [PATCH 1/3] shared: add root argument to search_and_fopen

[Michael Marineau]

This adds the same root argument to search_and_fopen that
conf_files_list already has. Tools that use those two functions as a
pair can now be easily modified to load configuration files from an
alternate root filesystem tree.
---
 src/binfmt/binfmt.c             |  2 +-
 src/modules-load/modules-load.c |  2 +-
 src/shared/util.c               | 12 ++++++------
 src/shared/util.h               |  4 ++--
 src/sysctl/sysctl.c             |  2 +-
 src/tmpfiles/tmpfiles.c         |  2 +-
 6 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/binfmt/binfmt.c b/src/binfmt/binfmt.c
index a1877c4..9fc5d4e 100644
--- a/src/binfmt/binfmt.c
+++ b/src/binfmt/binfmt.c
@@ -86,7 +86,7 @@ static int apply_file(const char *path, bool ignore_enoent) {
 
         assert(path);
 
-        r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f);
+        r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
         if (r < 0) {
                 if (ignore_enoent && r == -ENOENT)
                         return 0;
diff --git a/src/modules-load/modules-load.c b/src/modules-load/modules-load.c
index 49b153d..ecb84da 100644
--- a/src/modules-load/modules-load.c
+++ b/src/modules-load/modules-load.c
@@ -145,7 +145,7 @@ static int apply_file(struct kmod_ctx *ctx, const char *path, bool ignore_enoent
         assert(ctx);
         assert(path);
 
-        r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f);
+        r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
         if (r < 0) {
                 if (ignore_enoent && r == -ENOENT)
                         return 0;
diff --git a/src/shared/util.c b/src/shared/util.c
index 9e8cd54..8b8d2fb 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -5668,14 +5668,14 @@ int on_ac_power(void) {
         return found_online || !found_offline;
 }
 
-static int search_and_fopen_internal(const char *path, const char *mode, char **search, FILE **_f) {
+static int search_and_fopen_internal(const char *path, const char *mode, const char *root, char **search, FILE **_f) {
         char **i;
 
         assert(path);
         assert(mode);
         assert(_f);
 
-        if (!path_strv_canonicalize_absolute_uniq(search, NULL))
+        if (!path_strv_canonicalize_absolute_uniq(search, root))
                 return -ENOMEM;
 
         STRV_FOREACH(i, search) {
@@ -5699,7 +5699,7 @@ static int search_and_fopen_internal(const char *path, const char *mode, char **
         return -ENOENT;
 }
 
-int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f) {
+int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f) {
         _cleanup_strv_free_ char **copy = NULL;
 
         assert(path);
@@ -5722,10 +5722,10 @@ int search_and_fopen(const char *path, const char *mode, const char **search, FI
         if (!copy)
                 return -ENOMEM;
 
-        return search_and_fopen_internal(path, mode, copy, _f);
+        return search_and_fopen_internal(path, mode, root, copy, _f);
 }
 
-int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f) {
+int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f) {
         _cleanup_strv_free_ char **s = NULL;
 
         if (path_is_absolute(path)) {
@@ -5744,7 +5744,7 @@ int search_and_fopen_nulstr(const char *path, const char *mode, const char *sear
         if (!s)
                 return -ENOMEM;
 
-        return search_and_fopen_internal(path, mode, s, _f);
+        return search_and_fopen_internal(path, mode, root, s, _f);
 }
 
 char *strextend(char **x, ...) {
diff --git a/src/shared/util.h b/src/shared/util.h
index 81831e2..e99f8d1 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -696,8 +696,8 @@ char *strip_tab_ansi(char **p, size_t *l);
 
 int on_ac_power(void);
 
-int search_and_fopen(const char *path, const char *mode, const char **search, FILE **_f);
-int search_and_fopen_nulstr(const char *path, const char *mode, const char *search, FILE **_f);
+int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f);
+int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f);
 
 #define FOREACH_LINE(line, f, on_error)                         \
         for (;;)                                                \
diff --git a/src/sysctl/sysctl.c b/src/sysctl/sysctl.c
index 76efacb..8868732 100644
--- a/src/sysctl/sysctl.c
+++ b/src/sysctl/sysctl.c
@@ -123,7 +123,7 @@ static int parse_file(Hashmap *sysctl_options, const char *path, bool ignore_eno
 
         assert(path);
 
-        r = search_and_fopen_nulstr(path, "re", conf_file_dirs, &f);
+        r = search_and_fopen_nulstr(path, "re", NULL, conf_file_dirs, &f);
         if (r < 0) {
                 if (ignore_enoent && r == -ENOENT)
                         return 0;
diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 6e36dc7..3684289 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -1376,7 +1376,7 @@ static int read_config_file(const char *fn, bool ignore_enoent) {
 
         assert(fn);
 
-        r = search_and_fopen_nulstr(fn, "re", conf_file_dirs, &f);
+        r = search_and_fopen_nulstr(fn, "re", NULL, conf_file_dirs, &f);
         if (r < 0) {
                 if (ignore_enoent && r == -ENOENT)
                         return 0;
-- 
1.8.3.2