[PULL 38/41] linux-user/elfload: Use Error for load_elf_interp

[Peter Maydell <peter.maydell@linaro.org>]

From: Richard Henderson <richard.henderson@linaro.org>

This is slightly clearer than just using strerror, though
the different forms produced by error_setg_file_open and
error_setg_errno isn't entirely convenient.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20201016184207.786698-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 linux-user/elfload.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 56fbda93d02..04c04bc2602 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -2675,26 +2675,27 @@ static void load_elf_interp(const char *filename, struct image_info *info,
                             char bprm_buf[BPRM_BUF_SIZE])
 {
     int fd, retval;
+    Error *err = NULL;
 
     fd = open(path(filename), O_RDONLY);
     if (fd < 0) {
-        goto exit_perror;
+        error_setg_file_open(&err, errno, filename);
+        error_report_err(err);
+        exit(-1);
     }
 
     retval = read(fd, bprm_buf, BPRM_BUF_SIZE);
     if (retval < 0) {
-        goto exit_perror;
+        error_setg_errno(&err, errno, "Error reading file header");
+        error_reportf_err(err, "%s: ", filename);
+        exit(-1);
     }
+
     if (retval < BPRM_BUF_SIZE) {
         memset(bprm_buf + retval, 0, BPRM_BUF_SIZE - retval);
     }
 
     load_elf_image(filename, fd, info, NULL, bprm_buf);
-    return;
-
- exit_perror:
-    fprintf(stderr, "%s: %s\n", filename, strerror(errno));
-    exit(-1);
 }
 
 static int symfind(const void *s0, const void *s1)
-- 
2.20.1