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Diffstat (limited to 'src/stdio/__fmodeflags.c')
-rw-r--r--src/stdio/__fmodeflags.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/stdio/__fmodeflags.c b/src/stdio/__fmodeflags.c
new file mode 100644
index 00000000..da9f23b6
--- /dev/null
+++ b/src/stdio/__fmodeflags.c
@@ -0,0 +1,16 @@
+#include <fcntl.h>
+#include <string.h>
+
+int __fmodeflags(const char *mode)
+{
+ int flags;
+ if (strchr(mode, '+')) flags = O_RDWR;
+ else if (*mode == 'r') flags = O_RDONLY;
+ else flags = O_WRONLY;
+ if (strchr(mode, 'x')) flags |= O_EXCL;
+ if (strchr(mode, 'e')) flags |= O_CLOEXEC;
+ if (*mode != 'r') flags |= O_CREAT;
+ if (*mode == 'w') flags |= O_TRUNC;
+ if (*mode == 'a') flags |= O_APPEND;
+ return flags;
+}