a6f4e95faa
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51 lines
1.2 KiB
Diff
51 lines
1.2 KiB
Diff
diff --git a/src/api.c b/src/api.c
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index 54a6736..1557393 100644
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--- a/src/api.c
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+++ b/src/api.c
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@@ -2482,29 +2482,29 @@ static int cg_rd_ctrl_file(const char *subsys, const char *cgroup,
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const char *file, char **value)
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{
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char path[FILENAME_MAX];
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- FILE *ctrl_file = NULL;
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- int ret;
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+ int ctrl_file = -1;
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+ ssize_t ret;
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if (!cg_build_path_locked(cgroup, path, subsys))
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return ECGFAIL;
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strncat(path, file, sizeof(path) - strlen(path));
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- ctrl_file = fopen(path, "re");
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- if (!ctrl_file)
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+ ctrl_file = open(path, O_RDONLY | O_CLOEXEC);
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+ if (ctrl_file < 0)
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return ECGROUPVALUENOTEXIST;
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*value = calloc(CG_CONTROL_VALUE_MAX, 1);
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if (!*value) {
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- fclose(ctrl_file);
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+ close(ctrl_file);
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last_errno = errno;
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return ECGOTHER;
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}
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/*
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- * using %as crashes when we try to read from files like
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+ * using %as or fread crashes when we try to read from files like
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* memory.stat
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*/
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- ret = fread(*value, 1, CG_CONTROL_VALUE_MAX-1, ctrl_file);
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+ ret = read(ctrl_file, *value, CG_CONTROL_VALUE_MAX-1);
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if (ret < 0) {
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free(*value);
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*value = NULL;
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@@ -2514,7 +2514,7 @@ static int cg_rd_ctrl_file(const char *subsys, const char *cgroup,
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(*value)[ret-1] = '\0';
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}
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- fclose(ctrl_file);
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+ close(ctrl_file);
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return 0;
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}
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