diff mbox series

[06/60] linux-user/elfload: Open core file after vma_init

Message ID 20240301230619.661008-7-richard.henderson@linaro.org
State Accepted
Commit 106f8da6643634f141b39198576156a4c5bd6e60
Headers show
Series [01/60] linux-user/elfload: Disable core dump if getrlimit fails | expand

Commit Message

Richard Henderson March 1, 2024, 11:05 p.m. UTC 
Swap the ordering of vma_init and open.  This will be necessary
for further changes, and adjusts the error cleanup path.  Narrow
the scope of corefile, as the variable can be freed immediately
after use in open().

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/elfload.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 39d9ef9acc..877799e9c7 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -4625,7 +4625,6 @@  static int elf_core_dump(int signr, const CPUArchState *env)
     const CPUState *cpu = env_cpu((CPUArchState *)env);
     const TaskState *ts = (const TaskState *)cpu->opaque;
     struct vm_area_struct *vma = NULL;
-    g_autofree char *corefile = NULL;
     struct elf_note_info info;
     struct elfhdr elf;
     struct elf_phdr phdr;
@@ -4644,12 +4643,6 @@  static int elf_core_dump(int signr, const CPUArchState *env)
         return 0;
     }
 
-    corefile = core_dump_filename(ts);
-
-    if ((fd = open(corefile, O_WRONLY | O_CREAT,
-                   S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)) < 0)
-        return (-errno);
-
     /*
      * Walk through target process memory mappings and
      * set up structure containing this information.  After
@@ -4657,6 +4650,15 @@  static int elf_core_dump(int signr, const CPUArchState *env)
      */
     vma_init(&mm);
 
+    {
+        g_autofree char *corefile = core_dump_filename(ts);
+        fd = open(corefile, O_WRONLY | O_CREAT,
+                  S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+    }
+    if (fd < 0) {
+        goto out;
+    }
+
     walk_memory_regions(&mm, vma_walker);
     segs = vma_get_mapping_count(&mm);