pem: Use chunk_map() instead of non-portable mmap()

diff --git a/src/libstrongswan/plugins/pem/pem_builder.c b/src/libstrongswan/plugins/pem/pem_builder.c
index 254b195..62780c3 100644 (file)
--- a/src/libstrongswan/plugins/pem/pem_builder.c
+++ b/src/libstrongswan/plugins/pem/pem_builder.c
@@ -25,7 +25,6 @@
 #include <stddef.h>
 #include <fcntl.h>
 #include <sys/types.h>
-#include <sys/mman.h>
 #include <sys/stat.h>
 
 #include <utils/debug.h>
@@ -418,39 +417,17 @@ static void *load_from_blob(chunk_t blob, credential_type_t type, int subtype,
 static void *load_from_file(char *file, credential_type_t type, int subtype,
                                                        identification_t *subject, x509_flag_t flags)
 {
-       void *cred = NULL;
-       struct stat sb;
-       void *addr;
-       int fd;
+       void *cred;
+       chunk_t *chunk;
 
-       fd = open(file, O_RDONLY);
-       if (fd == -1)
+       chunk = chunk_map(file, FALSE);
+       if (!chunk)
        {
                DBG1(DBG_LIB, "  opening '%s' failed: %s", file, strerror(errno));
                return NULL;
        }
-
-       if (fstat(fd, &sb) == -1)
-       {
-               DBG1(DBG_LIB, "  getting file size of '%s' failed: %s", file,
-                        strerror(errno));
-               close(fd);
-               return NULL;
-       }
-
-       addr = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-       if (addr == MAP_FAILED)
-       {
-               DBG1(DBG_LIB, "  mapping '%s' failed: %s", file, strerror(errno));
-               close(fd);
-               return NULL;
-       }
-
-       cred = load_from_blob(chunk_create(addr, sb.st_size), type, subtype,
-                                                                          subject, flags);
-
-       munmap(addr, sb.st_size);
-       close(fd);
+       cred = load_from_blob(*chunk, type, subtype, subject, flags);
+       chunk_unmap(chunk);
        return cred;
 }