RTEMS 4.5.0 On-Line Library

Files and Directories Manager creat - Create a new file or rewrite an existing one

RTEMS POSIX API User's Guide

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

int creat(
  const char *path,
  mode_t      mode
);

EEXIST: path already exists and O_CREAT and O_EXCL were used.
EISDIR: path refers to a directory and the access requested involved writing
ETXTBSY: path refers to an executable image which is currently being executed and write access was requested
EFAULT: path points outside your accessible address space
EACCES: The requested access to the file is not allowed, or one of the directories in path did not allow search (execute) permission.
ENAMETOOLONG: path was too long.
ENOENT: A directory component in path does not exist or is a dangling symbolic link.
ENOTDIR: A component used as a directory in path is not, in fact, a directory.
EMFILE: The process alreadyh has the maximum number of files open.
ENFILE: The limit on the total number of files open on the system has been reached.
ENOMEM: Insufficient kernel memory was available.
EROFS: path refers to a file on a read-only filesystem and write access was requested

creat attempts to create a file and return a file descriptor for use in read, write, etc.

NONE

The routine is implemented in Cygnus newlib.

RTEMS POSIX API User's Guide