X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Futil%2Fos_file.h;h=cf0dc2075952c23a942b33b8b00895947755c060;hb=ac55b1a9a6266b5badfee82d81302ffc38faeb42;hp=2f97c19ed5597d4dfbf427377bdd2cfcb4de014c;hpb=316964709e21286c2af54e3afb3089d0fcce87c1;p=mesa.git

diff --git a/src/util/os_file.h b/src/util/os_file.h
index 2f97c19ed55..cf0dc207595 100644
--- a/src/util/os_file.h
+++ b/src/util/os_file.h
@@ -8,16 +8,47 @@
 #ifndef _OS_FILE_H_
 #define _OS_FILE_H_
 
+#include <stdbool.h>
+#include <stdio.h>
+
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
+/*
+ * Create a new file and opens it for writing-only.
+ * If the given filename already exists, nothing is done and NULL is returned.
+ * `errno` gets set to the failure reason; if that is not EEXIST, the caller
+ * might want to do something other than trying again.
+ */
+FILE *
+os_file_create_unique(const char *filename, int filemode);
+
+/*
+ * Duplicate a file descriptor, making sure not to keep it open after an exec*()
+ */
+int
+os_dupfd_cloexec(int fd);
+
 /*
  * Read a file.
  * Returns a char* that the caller must free(), or NULL and sets errno.
+ * If size is not null and no error occured it's set to the size of the
+ * file.
  */
 char *
-os_read_file(const char *filename);
+os_read_file(const char *filename, size_t *size);
+
+/*
+ * Try to determine if two file descriptors reference the same file description
+ *
+ * Return values:
+ * - 0:   They reference the same file description
+ * - > 0: They do not reference the same file description
+ * - < 0: Unable to determine whether they reference the same file description
+ */
+int
+os_same_file_description(int fd1, int fd2);
 
 #ifdef __cplusplus
 }