2 * Copyright 2019 Intel Corporation
3 * SPDX-License-Identifier: MIT
5 * File operations helpers
19 * Create a new file and opens it for writing-only.
20 * If the given filename already exists, nothing is done and NULL is returned.
21 * `errno` gets set to the failure reason; if that is not EEXIST, the caller
22 * might want to do something other than trying again.
25 os_file_create_unique(const char *filename
, int filemode
);
28 * Duplicate a file descriptor, making sure not to keep it open after an exec*()
31 os_dupfd_cloexec(int fd
);
35 * Returns a char* that the caller must free(), or NULL and sets errno.
36 * If size is not null and no error occured it's set to the size of the
40 os_read_file(const char *filename
, size_t *size
);
43 * Try to determine if two file descriptors reference the same file description
46 * - 0: They reference the same file description
47 * - > 0: They do not reference the same file description
48 * - < 0: Unable to determine whether they reference the same file description
51 os_same_file_description(int fd1
, int fd2
);
57 #endif /* _OS_FILE_H_ */