glibc/rawposix - writev/iovec fix #348
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rennergade
changed the title
rennergade
reviewed
Aug 20, 2025
|
Also needs to pass linter |
rennergade
reviewed
Aug 27, 2025
| @@ -24,6 +24,13 @@ | |||
| ssize_t | |||
| __writev (int fd, const struct iovec *iov, int iovcnt) | |||
| { | |||
| // clean up padding field of each iovec | |||
Yaxuan-w
reviewed
Aug 27, 2025
| translate_vmmap_addr(&cage, arg2).unwrap() as *const IovecStruct; | ||
| // iterate through each iovec pointer and manually do the address conversion | ||
| for i in 0..iovcnt { | ||
| let cur_iov_base = unsafe { iov_base.add(i as usize) } as *mut libc::iovec; |
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Why we don't use current type casting function?
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This PR is splited from PR #164
This PR focuses on spliting out the fix for writev syscall and iovec struct
Since
iovechas addresses inside its struct, it becomes a little tricky to handle it correctly in lind. One padding fields is added below to each address field to resolve the issue of 32-bit address and 64-bit address. Therefore, the padding fields also needs to be cleaned up before sending to the rawposix