Support to multi-threading and pthread interface (POSIX.1-2008) (#23)

[lunaix-os.git] / lunaix-os / kernel / exe / elf32 / elf32bfmt.c

diff --git a/lunaix-os/kernel/exe/elf32/elf32bfmt.c b/lunaix-os/kernel/exe/elf32/elf32bfmt.c
index 1079b06f85d12e0437a02b9a13a447bc4ae401b6..da94735fe99216fec9b2bbd9ac178b838d438ad5 100644 (file)
--- a/lunaix-os/kernel/exe/elf32/elf32bfmt.c
+++ b/lunaix-os/kernel/exe/elf32/elf32bfmt.c
@@ -1,4 +1,3 @@
-#include <lunaix/common.h>
 #include <lunaix/exebi/elf32.h>
 #include <lunaix/fs.h>
 #include <lunaix/mm/valloc.h>
@@ -13,6 +12,26 @@ elf32_read(struct v_file* elf, void* data, size_t off, size_t len)
     return pcache_read(elf->inode, data, len, off);
 }
 
+static int
+elf32_do_open(struct elf32* elf, struct v_file* elf_file)
+{
+    int status = 0;
+    elf->pheaders = NULL;
+    elf->elf_file = elf_file;
+
+    if ((status = elf32_read_ehdr(elf)) < 0) {
+        elf32_close(elf);
+        return status;
+    }
+
+    if ((status = elf32_read_phdr(elf)) < 0) {
+        elf32_close(elf);
+        return status;
+    }
+
+    return 0;
+}
+
 int
 elf32_open(struct elf32* elf, const char* path)
 {
@@ -28,27 +47,15 @@ elf32_open(struct elf32* elf, const char* path)
         return error;
     }
 
-    return elf32_openat(elf, elffile);
+    return elf32_do_open(elf, elffile);
 }
 
 int
 elf32_openat(struct elf32* elf, void* elf_vfile)
 {
-    int status = 0;
-    elf->pheaders = NULL;
-    elf->elf_file = elf_vfile;
-
-    if ((status = elf32_read_ehdr(elf)) < 0) {
-        elf32_close(elf);
-        return status;
-    }
-
-    if ((status = elf32_read_phdr(elf)) < 0) {
-        elf32_close(elf);
-        return status;
-    }
-
-    return 0;
+    // so the ref count kept in sync
+    vfs_ref_file(elf_vfile);
+    return elf32_do_open(elf, elf_vfile);
 }
 
 int
@@ -164,12 +171,19 @@ elf32_read_phdr(struct elf32* elf)
 }
 
 int
-elf32_check_exec(const struct elf32* elf)
+elf32_check_exec(const struct elf32* elf, int type)
 {
-    struct elf32_ehdr* ehdr = &elf->eheader;
+    const struct elf32_ehdr* ehdr = &elf->eheader;
+
+    return (ehdr->e_entry) && ehdr->e_type == type;
+}
+
+int
+elf32_check_arch(const struct elf32* elf)
+{
+    const struct elf32_ehdr* ehdr = &elf->eheader;
 
     return *(u32_t*)(ehdr->e_ident) == ELFMAGIC &&
            ehdr->e_ident[EI_CLASS] == ELFCLASS32 &&
-           ehdr->e_ident[EI_DATA] == ELFDATA2LSB && ehdr->e_type == ET_EXEC &&
-           ehdr->e_machine == EM_386;
-}
+           ehdr->e_ident[EI_DATA] == ELFDATA2LSB && ehdr->e_machine == EM_386;
+}
\ No newline at end of file