All "goto fail" may be transformed to "return -1".
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
linux-user/mmap.c | 62 ++++++++++++++++++++++++++---------------------
1 file changed, 35 insertions(+), 27 deletions(-)
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index d11f758d07..b4c3cc65aa 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -490,9 +490,9 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size,
abi_ulong align)
}
}
-/* NOTE: all the constants are the HOST ones */
-abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
- int flags, int fd, off_t offset)
+static abi_long target_mmap__locked(abi_ulong start, abi_ulong len,
+ int target_prot, int flags,
+ int fd, off_t offset)
{
int host_page_size = qemu_real_host_page_size();
abi_ulong ret, last, real_start, real_last, retaddr, host_len;
@@ -500,30 +500,27 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
int page_flags;
off_t host_offset;
- mmap_lock();
- trace_target_mmap(start, len, target_prot, flags, fd, offset);
-
if (!len) {
errno = EINVAL;
- goto fail;
+ return -1;
}
page_flags = validate_prot_to_pageflags(target_prot);
if (!page_flags) {
errno = EINVAL;
- goto fail;
+ return -1;
}
/* Also check for overflows... */
len = TARGET_PAGE_ALIGN(len);
if (!len) {
errno = ENOMEM;
- goto fail;
+ return -1;
}
if (offset & ~TARGET_PAGE_MASK) {
errno = EINVAL;
- goto fail;
+ return -1;
}
/*
@@ -553,7 +550,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
start = mmap_find_vma(real_start, host_len, TARGET_PAGE_SIZE);
if (start == (abi_ulong)-1) {
errno = ENOMEM;
- goto fail;
+ return -1;
}
}
@@ -574,7 +571,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
struct stat sb;
if (fstat(fd, &sb) == -1) {
- goto fail;
+ return -1;
}
/* Are we trying to create a map beyond EOF?. */
@@ -601,7 +598,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
p = mmap(g2h_untagged(start), host_len, host_prot,
flags | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (p == MAP_FAILED) {
- goto fail;
+ return -1;
}
/* update start so that it points to the file position at 'offset' */
host_start = (uintptr_t)p;
@@ -610,7 +607,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
flags | MAP_FIXED, fd, host_offset);
if (p == MAP_FAILED) {
munmap(g2h_untagged(start), host_len);
- goto fail;
+ return -1;
}
host_start += offset - host_offset;
}
@@ -621,7 +618,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
} else {
if (start & ~TARGET_PAGE_MASK) {
errno = EINVAL;
- goto fail;
+ return -1;
}
last = start + len - 1;
real_last = ROUND_UP(last, host_page_size) - 1;
@@ -633,14 +630,14 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
*/
if (last < start || !guest_range_valid_untagged(start, len)) {
errno = ENOMEM;
- goto fail;
+ return -1;
}
if (flags & MAP_FIXED_NOREPLACE) {
/* Validate that the chosen range is empty. */
if (!page_check_range_empty(start, last)) {
errno = EEXIST;
- goto fail;
+ return -1;
}
/*
@@ -671,17 +668,17 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
if ((flags & MAP_TYPE) == MAP_SHARED
&& (target_prot & PROT_WRITE)) {
errno = EINVAL;
- goto fail;
+ return -1;
}
retaddr = target_mmap(start, len, target_prot | PROT_WRITE,
(flags & (MAP_FIXED | MAP_FIXED_NOREPLACE))
| MAP_PRIVATE | MAP_ANONYMOUS,
-1, 0);
if (retaddr == -1) {
- goto fail;
+ return -1;
}
if (pread(fd, g2h_untagged(start), len, offset) == -1) {
- goto fail;
+ return -1;
}
if (!(target_prot & PROT_WRITE)) {
ret = target_mprotect(start, len, target_prot);
@@ -696,14 +693,14 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
/* one single host page */
if (!mmap_frag(real_start, start, last,
target_prot, flags, fd, offset)) {
- goto fail;
+ return -1;
}
goto the_end1;
}
if (!mmap_frag(real_start, start,
real_start + host_page_size - 1,
target_prot, flags, fd, offset)) {
- goto fail;
+ return -1;
}
real_start += host_page_size;
}
@@ -713,7 +710,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
if (!mmap_frag(real_page, real_page, last,
target_prot, flags, fd,
offset + real_page - start)) {
- goto fail;
+ return -1;
}
real_last -= host_page_size;
}
@@ -739,7 +736,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
munmap(p, len1);
errno = EEXIST;
}
- goto fail;
+ return -1;
}
passthrough_start = real_start;
passthrough_last = real_last;
@@ -773,11 +770,22 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
target_prot,
qemu_log_unlock(f);
}
}
- mmap_unlock();
return start;
-fail:
+}
+
+/* NOTE: all the constants are the HOST ones */
+abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot,
+ int flags, int fd, off_t offset)
+{
+ abi_long ret;
+
+ trace_target_mmap(start, len, target_prot, flags, fd, offset);
+ mmap_lock();
+
+ ret = target_mmap__locked(start, len, target_prot, flags, fd, offset);
+
mmap_unlock();
- return -1;
+ return ret;
}
static int mmap_reserve_or_unmap(abi_ulong start, abi_ulong len)
