initial file flags

1 files changed, 43 insertions, 0 deletions

diff --git a/internal/file/flags.go b/internal/file/flags.go
new file mode 100644
index 0000000..fcba927
--- /dev/null
+++ b/internal/file/flags.go
@@ -0,0 +1,43 @@
+package file
+
+import (
+	"strings"
+	"syscall"
+)
+
+var flagsToHuman = map[int]string{
+	syscall.O_ACCMODE:   "O_ACCMODE",
+	syscall.O_APPEND:    "O_APPEND",
+	syscall.O_ASYNC:     "O_ASYNC",
+	syscall.O_CLOEXEC:   "O_CLOEXEC",
+	syscall.O_CREAT:     "O_CREAT",
+	syscall.O_DIRECT:    "O_DIRECT",
+	syscall.O_DIRECTORY: "O_DIRECTORY",
+	syscall.O_DSYNC:     "O_DSYNC",
+	syscall.O_EXCL:      "O_EXCL",
+	syscall.O_NOATIME:   "O_NOATIME",
+	syscall.O_NOCTTY:    "O_NOCTTY",
+	syscall.O_NOFOLLOW:  "O_NOFOLLOW",
+	syscall.O_NONBLOCK:  "O_NONBLOCK",
+	syscall.O_RDONLY:    "O_RDONLY",
+	syscall.O_RDWR:      "O_RDWR",
+	syscall.O_SYNC:      "O_SYNC",
+	syscall.O_TRUNC:     "O_TRUNC",
+	syscall.O_WRONLY:    "O_WRONLY",
+}
+
+func FlagsToStr(flags int32) string {
+	return strings.Join(FlagsToStrs(flags), "|")
+}
+
+func FlagsToStrs(flags int32) (result []string) {
+	for flag, name := range flagsToHuman {
+		if int(flags)&flag == flag {
+			result = append(result, name)
+		}
+	}
+	if len(result) == 0 {
+		result = append(result, "O_RDONLY")
+	}
+	return
+}