BSD syscall#540
svc · unix #540
sys_preadv
Internal XNU symbol name for the preadv(2) syscall; the public wrapper is preadv(2).
Prototype
user_ssize_t sys_preadv(int fd, struct iovec *iovp, int iovcnt, off_t offset);Returns: user_ssize_t
Arguments
| Name | Type | Dir | Description |
|---|---|---|---|
| fd | int | - | |
| iovp | struct iovec | - | |
| iovcnt | int | - | |
| offset | off_t | - |
Version history
| XNU tag | macOS | # |
|---|---|---|
| xnu-7195.50.7.100.1 | macOS 11.0 Big Sur | 540 |
| xnu-8019.41.5 | macOS 12.0 Monterey | 540 |
| xnu-8792.41.9 | macOS 13.0 Ventura | 540 |
| xnu-10002.1.13 | macOS 14.0 Sonoma | 540 |
| xnu-11215.1.10 | macOS 15.0 Sequoia | 540 |
| xnu-11417.101.15 | macOS 15.4 Sequoia | 540 |
| xnu-12377.1.9 | macOS 26.0 Tahoe | 540 |
| xnu-10002.41.9 | — | 540 |
| xnu-10002.61.3 | — | 540 |
| xnu-10002.81.5 | — | 540 |
| xnu-10063.101.15 | — | 540 |
| xnu-10063.121.3 | — | 540 |
| xnu-10063.141.1 | — | 540 |
| xnu-11215.41.3 | — | 540 |
| xnu-11215.61.5 | — | 540 |
| xnu-11215.81.4 | — | 540 |
| xnu-11417.121.6 | — | 540 |
| xnu-11417.140.69 | — | 540 |
| xnu-12377.101.15 | — | 540 |
| xnu-12377.41.6 | — | 540 |
| xnu-12377.61.12 | — | 540 |
| xnu-12377.81.4 | — | 540 |
| xnu-7195.101.1 | — | 540 |
| xnu-7195.121.3 | — | 540 |
| xnu-7195.141.2 | — | 540 |
| xnu-7195.60.75 | — | 540 |
| xnu-7195.81.3 | — | 540 |
| xnu-8019.61.5 | — | 540 |
| xnu-8019.80.24 | — | 540 |
| xnu-8020.101.4 | — | 540 |
| xnu-8020.121.3 | — | 540 |
| xnu-8020.140.41 | — | 540 |
| xnu-8792.61.2 | — | 540 |
| xnu-8792.81.2 | — | 540 |
| xnu-8796.101.5 | — | 540 |
| xnu-8796.121.2 | — | 540 |
| xnu-8796.141.3 | — | 540 |
Notes
Positional, vectored read — combines readv and pread in a single syscall. See preadv.
Related APIs
preadvreadvpreadread