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linux-user: Make target_strerror() return 'const char *'

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Make target_strerror() return 'const char *' rather than just 'char *';
this will allow us to return constant strings from it for some special
cases.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Peter Maydell 2016-06-06 19:58:18 +01:00 committed by Riku Voipio
parent 8efb2ed5ec
commit 7dcdaeafe0
3 changed files with 4 additions and 4 deletions
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2
linux-user/qemu.h
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@ -195,7 +195,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
extern THREAD CPUState *thread_cpu;
void cpu_loop(CPUArchState *env);
char *target_strerror(int err);
const char *target_strerror(int err);
int get_osversion(void);
void init_qemu_uname_release(void);
void fork_start(void);

4
linux-user/strace.c
View File

@ -281,7 +281,7 @@ print_ipc(const struct syscallname *name,
static void
print_syscall_ret_addr(const struct syscallname *name, abi_long ret)
{
char *errstr = NULL;
const char *errstr = NULL;
if (ret < 0) {
errstr = target_strerror(-ret);
@ -1594,7 +1594,7 @@ void
print_syscall_ret(int num, abi_long ret)
{
int i;
char *errstr = NULL;
const char *errstr = NULL;
for(i=0;i<nsyscalls;i++)
if( scnames[i].nr == num ) {

2
linux-user/syscall.c
View File

@ -630,7 +630,7 @@ static inline int is_error(abi_long ret)
return (abi_ulong)ret >= (abi_ulong)(-4096);
}
char *target_strerror(int err)
const char *target_strerror(int err)
{
if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) {
return NULL;