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bsd-user: Implement trunctate and ftruncate 

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
master
Warner Losh 2022-06-12 09:29:02 -06:00
parent a15699acaf
commit 4b795b147b
2 changed files with 37 additions and 0 deletions
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29
bsd-user/bsd-file.h
View File

@ -497,4 +497,33 @@ static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2)
return get_errno(dup2(arg1, arg2));
}
/* truncate(2) */
static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4)
{
abi_long ret;
void *p;
LOCK_PATH(p, arg1);
if (regpairs_aligned(cpu_env) != 0) {
arg2 = arg3;
arg3 = arg4;
}
ret = get_errno(truncate(p, target_arg64(arg2, arg3)));
UNLOCK_PATH(p, arg1);
return ret;
}
/* ftruncate(2) */
static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4)
{
if (regpairs_aligned(cpu_env) != 0) {
arg2 = arg3;
arg3 = arg4;
}
return get_errno(ftruncate(arg1, target_arg64(arg2, arg3)));
}
#endif /* BSD_FILE_H */

8
bsd-user/freebsd/os-syscall.c
View File

@ -357,6 +357,14 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1,
ret = do_bsd_dup2(arg1, arg2);
break;
case TARGET_FREEBSD_NR_truncate: /* truncate(2) */
ret = do_bsd_truncate(cpu_env, arg1, arg2, arg3, arg4);
break;
case TARGET_FREEBSD_NR_ftruncate: /* ftruncate(2) */
ret = do_bsd_ftruncate(cpu_env, arg1, arg2, arg3, arg4);
break;
default:
qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num);
ret = -TARGET_ENOSYS;