Inizio trattazione statx

[gapil.git] / listati / InitFile.c

diff --git a/listati/InitFile.c b/listati/InitFile.c
new file mode 100644 (file)
index 0000000..e7d010a
--- /dev/null
+++ b/listati/InitFile.c
@@ -0,0 +1,24 @@
+ssize_t InitFile(int dirfd, const char *file, const char *buf, size_t size) 
+{
+    int fd, written, res;
+    char path[PATH_MAX];
+   
+    fd = openat(dirfd, ".", O_TMPFILE|O_RDWR, S_IRUSR|S_IWUSR);
+    if (fd < 0) {
+       perror("Cannot get temporary filedescritor");
+       return(fd);
+    }
+    written = FullWrite(fd, buf, size);
+    if (written < 0) {
+       perror("error writing on tmp file");
+       return(res);
+    }
+    snprintf(path, PATH_MAX, "/proc/self/fd/%d", fd);
+    res = linkat(AT_FDCWD, path, dirfd, file, AT_SYMLINK_FOLLOW);
+    if (res < 0) {
+       perror("error linking the file");
+       return(res);
+    } else {
+       return written;
+    }
+}