unit-test: make "test -e" test independent of $CWD

[karo-tx-uboot.git] / arch / sandbox / cpu / os.c

diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 26f44cb597ef14cd8f05376e0b96fd2ab2522ae1..98f565eaaf8cfd2d19fb0c011983bb2198d6dce6 100644 (file)
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -27,6 +27,10 @@
 
 /* Operating System Interface */
 
+struct os_mem_hdr {
+       size_t length;          /* number of bytes in the block */
+};
+
 ssize_t os_read(int fd, void *buf, size_t count)
 {
        return read(fd, buf, count);
@@ -88,6 +92,11 @@ int os_close(int fd)
        return close(fd);
 }
 
+int os_unlink(const char *pathname)
+{
+       return unlink(pathname);
+}
+
 void os_exit(int exit_code)
 {
        exit(exit_code);
@@ -128,8 +137,45 @@ void os_tty_raw(int fd)
 
 void *os_malloc(size_t length)
 {
-       return mmap(NULL, length, PROT_READ | PROT_WRITE,
-                       MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+       struct os_mem_hdr *hdr;
+
+       hdr = mmap(NULL, length + sizeof(*hdr), PROT_READ | PROT_WRITE,
+                  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+       if (hdr == MAP_FAILED)
+               return NULL;
+       hdr->length = length;
+
+       return hdr + 1;
+}
+
+void os_free(void *ptr)
+{
+       struct os_mem_hdr *hdr = ptr;
+
+       hdr--;
+       if (ptr)
+               munmap(hdr, hdr->length + sizeof(*hdr));
+}
+
+void *os_realloc(void *ptr, size_t length)
+{
+       struct os_mem_hdr *hdr = ptr;
+       void *buf = NULL;
+
+       hdr--;
+       if (length != 0) {
+               buf = os_malloc(length);
+               if (!buf)
+                       return buf;
+               if (ptr) {
+                       if (length > hdr->length)
+                               length = hdr->length;
+                       memcpy(buf, ptr, length);
+               }
+       }
+       os_free(ptr);
+
+       return buf;
 }
 
 void os_usleep(unsigned long usec)
@@ -347,3 +393,53 @@ ssize_t os_get_filesize(const char *fname)
                return ret;
        return buf.st_size;
 }
+
+void os_putc(int ch)
+{
+       putchar(ch);
+}
+
+void os_puts(const char *str)
+{
+       while (*str)
+               os_putc(*str++);
+}
+
+int os_write_ram_buf(const char *fname)
+{
+       struct sandbox_state *state = state_get_current();
+       int fd, ret;
+
+       fd = open(fname, O_CREAT | O_WRONLY, 0777);
+       if (fd < 0)
+               return -ENOENT;
+       ret = write(fd, state->ram_buf, state->ram_size);
+       close(fd);
+       if (ret != state->ram_size)
+               return -EIO;
+
+       return 0;
+}
+
+int os_read_ram_buf(const char *fname)
+{
+       struct sandbox_state *state = state_get_current();
+       int fd, ret;
+       int size;
+
+       size = os_get_filesize(fname);
+       if (size < 0)
+               return -ENOENT;
+       if (size != state->ram_size)
+               return -ENOSPC;
+       fd = open(fname, O_RDONLY);
+       if (fd < 0)
+               return -ENOENT;
+
+       ret = read(fd, state->ram_buf, state->ram_size);
+       close(fd);
+       if (ret != state->ram_size)
+               return -EIO;
+
+       return 0;
+}