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posix_fallocate
Langue: en
Version: 2006-03-01 (fedora - 16/08/07)
Section: 3 (Bibliothèques de fonctions)
NAME
posix_fallocate - allocate file spaceSYNOPSIS
#define _XOPEN_SOURCE 600 #include <stdlib.h> int posix_fallocate(int fd, off_t offset, off_t len);
DESCRIPTION
The function posix_fallocate() ensures that disk space is allocated for the file referred to by the descriptor fd for the bytes in the range starting at offset and continuing for len bytes. After a successful call to posix_fallocate(), subsequent writes to bytes in the specified range are guaranteed not to fail because of lack of disk space.If the size of the file is less than offset+len, then the file is increased to this size; otherwise the file size is left unchanged.
RETURN VALUE
posix_fallocate() returns zero on success, or an error number on failure. Note that errno is not set.ERRORS
- EBADF
- fd is not a valid file descriptor, or is not opened for writing.
- EFBIG
- offset+len exceeds the maximum file size.
- EINVAL
- offset or len was less than 0.
- ENODEV
- fd does not refer to a regular file.
- ENOSPC
- There is not enough space left on the device containing the file referred to by fd.
- ESPIPE
- fd refers to a pipe of file descriptor.
AVAILABILITY
posix_fallocate() is available since glibc 2.1.94.CONFORMING TO
POSIX.1-2001.SEE ALSO
lseek(2), posix_fadvise(2), feature_test_macros(7)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre