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Handle ambiguous fstflags on fd_filestat_set_times (#2892)

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It's possible to set both `atim` and `atim_now` in the `fstflags`
parameter.  Same goes for `mtin` and `mtim_now`.  However, it's
ambiguous which time should be set in these two cases.  This commit
checks this and returns `EINVAL`.
This commit is contained in:
Yage Hu 2023-12-10 22:16:58 -08:00 committed by GitHub
parent 6cb2ea4935
commit bc2d8959dd
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1 changed files with 7 additions and 1 deletions
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8
core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c
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@ -1891,7 +1891,13 @@ wasmtime_ssp_fd_filestat_set_times(wasm_exec_env_t exec_env,
if ((fstflags if ((fstflags
& ~(__WASI_FILESTAT_SET_ATIM | __WASI_FILESTAT_SET_ATIM_NOW & ~(__WASI_FILESTAT_SET_ATIM | __WASI_FILESTAT_SET_ATIM_NOW
| __WASI_FILESTAT_SET_MTIM | __WASI_FILESTAT_SET_MTIM_NOW)) | __WASI_FILESTAT_SET_MTIM | __WASI_FILESTAT_SET_MTIM_NOW))
!= 0) != 0
|| (fstflags
& (__WASI_FILESTAT_SET_ATIM | __WASI_FILESTAT_SET_ATIM_NOW))
== (__WASI_FILESTAT_SET_ATIM | __WASI_FILESTAT_SET_ATIM_NOW)
|| (fstflags
& (__WASI_FILESTAT_SET_MTIM | __WASI_FILESTAT_SET_MTIM_NOW))
== (__WASI_FILESTAT_SET_MTIM | __WASI_FILESTAT_SET_MTIM_NOW))
return __WASI_EINVAL; return __WASI_EINVAL;
struct fd_object *fo; struct fd_object *fo;