summaryrefslogtreecommitdiff
path: root/src/helper
diff options
context:
space:
mode:
authormidipix <writeonce@midipix.org>2017-02-08 01:08:41 -0500
committermidipix <writeonce@midipix.org>2017-02-08 01:19:09 -0500
commit00a88c01dc20c33da1936600d46974d460a23cc4 (patch)
tree2b0de22c0b68520e9504b566fce23d67ab16b05b /src/helper
parenta75141e458ef5b5016961afcb789ee8d2cee2584 (diff)
downloadmdso-00a88c01dc20c33da1936600d46974d460a23cc4.tar.bz2
mdso-00a88c01dc20c33da1936600d46974d460a23cc4.tar.xz
project: source tree: tidy up.
Diffstat (limited to 'src/helper')
-rw-r--r--src/helper/mdso_create_output.c (renamed from src/helper/mdso_create_asm_source.c)0
-rw-r--r--src/helper/mdso_map_input.c62
2 files changed, 62 insertions, 0 deletions
diff --git a/src/helper/mdso_create_asm_source.c b/src/helper/mdso_create_output.c
index b152697..b152697 100644
--- a/src/helper/mdso_create_asm_source.c
+++ b/src/helper/mdso_create_output.c
diff --git a/src/helper/mdso_map_input.c b/src/helper/mdso_map_input.c
new file mode 100644
index 0000000..77401f3
--- /dev/null
+++ b/src/helper/mdso_map_input.c
@@ -0,0 +1,62 @@
+/****************************************************************/
+/* mdso: midipix dso scavenger */
+/* Copyright (C) 2015--2017 Z. Gilboa */
+/* Released under GPLv2 and GPLv3; see COPYING.MDSO. */
+/****************************************************************/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <mdso/mdso.h>
+#include "mdso_errinfo_impl.h"
+
+int mdso_map_input(
+ const struct mdso_driver_ctx * dctx,
+ int fd,
+ const char * path,
+ int prot,
+ struct mdso_input * map)
+{
+ struct stat st;
+ bool fnew;
+ int ret;
+
+ if ((fnew = (fd < 0)))
+ fd = open(path,O_RDONLY | O_CLOEXEC);
+
+ if (fd < 0)
+ return MDSO_SYSTEM_ERROR(dctx);
+
+ if ((ret = fstat(fd,&st) < 0) && fnew)
+ close(fd);
+
+ else if ((st.st_size == 0) && fnew)
+ close(fd);
+
+ if (ret < 0)
+ return MDSO_SYSTEM_ERROR(dctx);
+
+ else if (st.st_size == 0)
+ return MDSO_CUSTOM_ERROR(
+ dctx,MDSO_ERR_SOURCE_SIZE_ZERO);
+
+ map->size = st.st_size;
+ map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0);
+
+ if (fnew)
+ close(fd);
+
+ return (map->addr == MAP_FAILED)
+ ? MDSO_SYSTEM_ERROR(dctx)
+ : 0;
+}
+
+int mdso_unmap_input(struct mdso_input * map)
+{
+ return munmap(map->addr,map->size);
+}