Move ELF-related files together

1 files changed, 36 insertions, 0 deletions

diff --git a/src/elfops/first-section-in-segment.c b/src/elfops/first-section-in-segment.c
new file mode 100644
index 0000000..58065a5
--- /dev/null
+++ b/src/elfops/first-section-in-segment.c
@@ -0,0 +1,36 @@
+#include <stdlib.h>
+
+#include <libelf.h>
+#include <gelf.h>
+
+#include <libelfu/libelfu.h>
+
+
+/*
+ * Returns the section that starts at the same point in the file as
+ * the segment AND is wholly contained in the memory image.
+ *
+ * If no section fits, NULL is returned.
+ */
+Elf_Scn* elfu_firstSectionInSegment(Elf *e, GElf_Phdr *phdr)
+{
+  Elf_Scn *scn;
+
+  scn = elf_getscn(e, 1);
+  while (scn) {
+    GElf_Shdr shdr;
+
+    if (gelf_getshdr(scn, &shdr) != &shdr) {
+      return NULL;
+    }
+
+    if (shdr.sh_offset == phdr->p_offset
+        && elfu_segmentContainsSection(phdr, &shdr)) {
+      return scn;
+    }
+
+    scn = elf_nextscn(e, scn);
+  }
+
+  return NULL;
+}