diff options
Diffstat (limited to 'commands/memcpy.c')
| -rw-r--r-- | commands/memcpy.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/commands/memcpy.c b/commands/memcpy.c index 168ef3b4fc..ddaf767eac 100644 --- a/commands/memcpy.c +++ b/commands/memcpy.c @@ -34,8 +34,6 @@ #include <linux/stat.h> #include <xfuncs.h> -extern char *mem_rw_buf; - static char *devmem = "/dev/mem"; static int do_memcpy(int argc, char *argv[]) @@ -47,6 +45,7 @@ static int do_memcpy(int argc, char *argv[]) int mode = 0; struct stat statbuf; int ret = 0; + char *buf; if (mem_parse_options(argc, argv, "bwlqs:d:", &mode, &sourcefile, &destfile, NULL) < 0) @@ -82,12 +81,14 @@ static int do_memcpy(int argc, char *argv[]) return 1; } + buf = xmalloc(RW_BUF_SIZE); + while (count > 0) { int now, r, w, tmp; now = min((loff_t)RW_BUF_SIZE, count); - r = read(sourcefd, mem_rw_buf, now); + r = read(sourcefd, buf, now); if (r < 0) { perror("read"); goto out; @@ -99,7 +100,7 @@ static int do_memcpy(int argc, char *argv[]) tmp = 0; now = r; while (now) { - w = write(destfd, mem_rw_buf + tmp, now); + w = write(destfd, buf + tmp, now); if (w < 0) { perror("write"); goto out; @@ -123,6 +124,7 @@ static int do_memcpy(int argc, char *argv[]) } out: + free(buf); close(sourcefd); close(destfd); |