summaryrefslogtreecommitdiffstats
path: root/libnetdata/libnetdata.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2021-02-07 11:45:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2021-02-07 11:45:55 +0000
commita8220ab2d293bb7f4b014b79d16b2fb05090fa93 (patch)
tree77f0a30f016c0925cf7ee9292e644bba183c2774 /libnetdata/libnetdata.c
parentAdding upstream version 1.19.0. (diff)
downloadnetdata-a8220ab2d293bb7f4b014b79d16b2fb05090fa93.tar.xz
netdata-a8220ab2d293bb7f4b014b79d16b2fb05090fa93.zip
Adding upstream version 1.29.0.upstream/1.29.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libnetdata/libnetdata.c')
-rw-r--r--libnetdata/libnetdata.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/libnetdata/libnetdata.c b/libnetdata/libnetdata.c
index 095c38c25..c9b7ab198 100644
--- a/libnetdata/libnetdata.c
+++ b/libnetdata/libnetdata.c
@@ -168,6 +168,7 @@ char *strdupz(const char *s) {
return t;
}
+// If ptr is NULL, no operation is performed.
void freez(void *ptr) {
free(ptr);
}
@@ -1452,3 +1453,41 @@ void recursive_config_double_dir_load(const char *user_path, const char *stock_p
freez(udir);
freez(sdir);
}
+
+// Returns the number of bytes read from the file if file_size is not NULL.
+// The actual buffer has an extra byte set to zero (not included in the count).
+char *read_by_filename(char *filename, long *file_size)
+{
+ FILE *f = fopen(filename, "r");
+ if (!f)
+ return NULL;
+ if (fseek(f, 0, SEEK_END) < 0) {
+ fclose(f);
+ return NULL;
+ }
+ long size = ftell(f);
+ if (size <= 0 || fseek(f, 0, SEEK_END) < 0) {
+ fclose(f);
+ return NULL;
+ }
+ char *contents = callocz(size + 1, 1);
+ if (!contents) {
+ fclose(f);
+ return NULL;
+ }
+ if (fseek(f, 0, SEEK_SET) < 0) {
+ fclose(f);
+ freez(contents);
+ return NULL;
+ }
+ size_t res = fread(contents, 1, size, f);
+ if ( res != (size_t)size) {
+ freez(contents);
+ fclose(f);
+ return NULL;
+ }
+ fclose(f);
+ if (file_size)
+ *file_size = size;
+ return contents;
+}