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ebac4655 JA |
1 | #ifndef FIO_OS_LINUX_H |
2 | #define FIO_OS_LINUX_H | |
3 | ||
4 | #include <sys/ioctl.h> | |
8756e4d4 | 5 | #include <sys/uio.h> |
3c39a379 JA |
6 | #include <sys/syscall.h> |
7 | #include <unistd.h> | |
8756e4d4 | 8 | #include <asm/unistd.h> |
ebac4655 JA |
9 | |
10 | #define FIO_HAVE_LIBAIO | |
11 | #define FIO_HAVE_POSIXAIO | |
12 | #define FIO_HAVE_FADVISE | |
13 | #define FIO_HAVE_CPU_AFFINITY | |
14 | #define FIO_HAVE_DISK_UTIL | |
15 | #define FIO_HAVE_SGIO | |
ba4f8923 | 16 | #define FIO_HAVE_IOPRIO |
8756e4d4 | 17 | #define FIO_HAVE_SPLICE |
ebac4655 JA |
18 | |
19 | #define OS_MAP_ANON (MAP_ANONYMOUS) | |
20 | ||
21 | typedef cpu_set_t os_cpu_mask_t; | |
22 | ||
23 | /* | |
24 | * we want fadvise64 really, but it's so tangled... later | |
25 | */ | |
26 | #define fadvise(fd, off, len, advice) \ | |
27 | posix_fadvise((fd), (off_t)(off), (len), (advice)) | |
28 | ||
29 | #define fio_setaffinity(td) \ | |
30 | sched_setaffinity((td)->pid, sizeof((td)->cpumask), &(td)->cpumask) | |
31 | #define fio_getaffinity(pid, ptr) \ | |
32 | sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) | |
33 | ||
34 | static inline int ioprio_set(int which, int who, int ioprio) | |
35 | { | |
36 | return syscall(__NR_ioprio_set, which, who, ioprio); | |
37 | } | |
38 | ||
8756e4d4 JA |
39 | static _syscall6(int, sys_splice, int, fdin, loff_t *, off_in, int, fdout, loff_t *, off_out, size_t, len, unsigned int, flags); |
40 | static _syscall4(int, sys_vmsplice, int, fd, const struct iovec *, iov, unsigned long, nr_segs, unsigned int, flags); | |
41 | static _syscall4(int, sys_tee, int, fdin, int, fdout, size_t, len, unsigned int, flags); | |
42 | ||
43 | static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, | |
44 | size_t len, unsigned long flags) | |
45 | { | |
46 | return sys_splice(fdin, off_in, fdout, off_out, len, flags); | |
47 | } | |
48 | ||
49 | static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) | |
50 | { | |
51 | return sys_tee(fdin, fdout, len, flags); | |
52 | } | |
53 | ||
54 | static inline int vmsplice(int fd, const struct iovec *iov, | |
55 | unsigned long nr_segs, unsigned int flags) | |
56 | { | |
57 | return sys_vmsplice(fd, iov, nr_segs, flags); | |
58 | } | |
59 | ||
60 | #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ | |
61 | #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ | |
62 | /* we may still block on the fd we splice */ | |
63 | /* from/to, of course */ | |
64 | #define SPLICE_F_MORE (0x04) /* expect more data */ | |
65 | #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ | |
66 | ||
3feedc60 JA |
67 | #define SPLICE_DEF_SIZE (64*1024) |
68 | ||
ebac4655 JA |
69 | enum { |
70 | IOPRIO_WHO_PROCESS = 1, | |
71 | IOPRIO_WHO_PGRP, | |
72 | IOPRIO_WHO_USER, | |
73 | }; | |
74 | ||
75 | #define IOPRIO_CLASS_SHIFT 13 | |
76 | ||
77 | #ifndef BLKGETSIZE64 | |
78 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) | |
79 | #endif | |
80 | ||
9104f874 | 81 | static inline int blockdev_size(int fd, unsigned long long *bytes) |
ebac4655 JA |
82 | { |
83 | if (!ioctl(fd, BLKGETSIZE64, bytes)) | |
84 | return 0; | |
85 | ||
86 | return errno; | |
87 | } | |
88 | ||
89 | #endif |