GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
Debian 6.0.3(Squeeze) |
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ustat(2) |
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ustat − get file system statistics
#include
<sys/types.h>
#include <unistd.h> /* libc[45] */
#include <ustat.h> /* glibc2 */
int ustat(dev_t dev, struct ustat *ubuf);
ustat() returns information about a mounted file system. dev is a device number identifying a device containing a mounted file system. ubuf is a pointer to a ustat structure that contains the following members:
daddr_t
f_tfree; /* Total free blocks */
ino_t f_tinode; /* Number of free inodes */
char f_fname[6]; /* Filsys name */
char f_fpack[6]; /* Filsys pack name */
The last two fields, f_fname and f_fpack, are not implemented and will always be filled with null bytes ('\0').
On success, zero is returned and the ustat structure pointed to by ubuf will be filled in. On error, −1 is returned, and errno is set appropriately.
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EFAULT |
ubuf points outside of your accessible address space. | ||
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EINVAL |
dev does not refer to a device containing a mounted file system. | ||
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ENOSYS |
The mounted file system referenced by dev does not support this operation, or any version of Linux before 1.3.16. |
SVr4.
ustat() is deprecated and has only been provided for compatibility. All new programs should use statfs(2) instead.
HP-UX
Notes
The HP-UX version of the ustat structure has an
additional field, f_blksize, that is unknown
elsewhere. HP-UX warns: For some file systems, the number of
free inodes does not change. Such file systems will return
−1 in the field f_tinode. For some file
systems, inodes are dynamically allocated. Such file systems
will return the current number of free inodes.
stat(2), statfs(2)
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.
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ustat(2) | |