[Qemu-devel] [PATCHv2 10/22] linux-user: remove two unchecked uses of strdup

[Jim Meyering]

From: Jim Meyering <address@hidden>

Remove two uses of strdup (use g_path_get_basename instead),
and add a comment that this strncpy use is ok.

Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Jim Meyering <address@hidden>
---
 linux-user/elfload.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index f3b1552..8807684 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -2316,7 +2316,7 @@ static void fill_prstatus(struct target_elf_prstatus 
*prstatus,

 static int fill_psinfo(struct target_elf_prpsinfo *psinfo, const TaskState *ts)
 {
-    char *filename, *base_filename;
+    char *base_filename;
     unsigned int i, len;

     (void) memset(psinfo, 0, sizeof (*psinfo));
@@ -2338,13 +2338,15 @@ static int fill_psinfo(struct target_elf_prpsinfo 
*psinfo, const TaskState *ts)
     psinfo->pr_uid = getuid();
     psinfo->pr_gid = getgid();

-    filename = strdup(ts->bprm->filename);
-    base_filename = strdup(basename(filename));
+    base_filename = g_path_get_basename(ts->bprm->filename);
+    /*
+     * Using strncpy here is fine: at max-length,
+     * this field is not NUL-terminated.
+     */
     (void) strncpy(psinfo->pr_fname, base_filename,
                    sizeof(psinfo->pr_fname));
-    free(base_filename);
-    free(filename);

+    g_free(base_filename);
     bswap_psinfo(psinfo);
     return (0);
 }
-- 
1.7.10.2.605.gbefc5ed