tests: (test_mkfds::mmap) new factory

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/tests/helpers/test_mkfds.c b/tests/helpers/test_mkfds.c
index 642f8ec9a6dee77ce8a701a6478c953f76767d1f..b0d34c6050998b3a552215653cde2646143c92e0 100644 (file)
--- a/tests/helpers/test_mkfds.c
+++ b/tests/helpers/test_mkfds.c
@@ -56,6 +56,7 @@
 #include <sys/signalfd.h>
 #include <sys/socket.h>
 #include <sys/shm.h>
+#include <sys/stat.h>
 #include <sys/syscall.h>
 #include <sys/timerfd.h>
 #include <sys/types.h>
@@ -3167,6 +3168,51 @@ static void free_pty(const struct factory * factory _U_, void *data)
        free(data);
 }
 
+struct mmap_data {
+       char *addr;
+       size_t len;
+};
+
+static void *make_mmap(const struct factory *factory, struct fdesc fdescs[] _U_,
+                      int argc, char ** argv)
+{
+       struct arg file = decode_arg("file", factory->params, argc, argv);
+       const char *sfile = ARG_STRING(file);
+
+       int fd = open(sfile, O_RDONLY);
+       if (fd < 0)
+               err(EXIT_FAILURE, "failed in opening %s", sfile);
+       free_arg(&file);
+
+       struct stat sb;
+       if (fstat(fd, &sb) < 0) {
+               int e = errno;
+               close(fd);
+               errno = e;
+               err(EXIT_FAILURE, "failed in fstat()");
+       }
+       char *addr = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+       if (addr == MAP_FAILED) {
+               int e = errno;
+               close(fd);
+               errno = e;
+               err(EXIT_FAILURE, "failed in mmap()");
+       }
+       close(fd);
+
+       struct mmap_data *data = xmalloc(sizeof(*data));
+       data->addr = addr;
+       data->len = sb.st_size;
+
+       return data;
+}
+
+static void free_mmap(const struct factory * factory _U_, void *data)
+{
+       munmap(((struct mmap_data *)data)->addr,
+              ((struct mmap_data *)data)->len);
+}
+
 #define PARAM_END { .name = NULL, }
 static const struct factory factories[] = {
        {
@@ -3999,6 +4045,24 @@ static const struct factory factories[] = {
                        PARAM_END
                }
        },
+       {
+               .name = "mmap",
+               .desc = "do mmap the given file",
+               .priv = false,
+               .N    = 0,
+               .EX_N = 0,
+               .make = make_mmap,
+               .free = free_mmap,
+               .params = (struct parameter []) {
+                       {
+                               .name = "file",
+                               .type = PTYPE_STRING,
+                               .desc = "file to be opened",
+                               .defv.string = "/etc/passwd",
+                       },
+                       PARAM_END
+               },
+       },
 };
 
 static int count_parameters(const struct factory *factory)