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[Qemu-ppc] [PATCH 1/2] extract file_load() function from rom_add_file()
From: |
Olivia Yin |
Subject: |
[Qemu-ppc] [PATCH 1/2] extract file_load() function from rom_add_file() for reusing |
Date: |
Tue, 14 Aug 2012 15:49:53 +0800 |
Sanity check in rom_add_file() could be reused by other image loaders.
Signed-off-by: Olivia Yin <address@hidden>
---
This patch is based on branch 'ppc-next' of Alex's upstream QEMU repo:
http://repo.or.cz/r/qemu/agraf.git
hw/loader.c | 61 +++++++++++++++++++++++++++++++---------------------------
1 files changed, 33 insertions(+), 28 deletions(-)
diff --git a/hw/loader.c b/hw/loader.c
index 33acc2f..f2099b6 100644
--- a/hw/loader.c
+++ b/hw/loader.c
@@ -86,6 +86,36 @@ int load_image(const char *filename, uint8_t *addr)
return size;
}
+static int file_load(const char *file, uint8_t **data)
+{
+ int fd = -1;
+ ssize_t rc, size;
+
+ fd = open(file, O_RDONLY | O_BINARY);
+ if (fd == -1) {
+ fprintf(stderr, "Could not open file '%s': %s\n",
+ file, strerror(errno));
+ return -1;
+ }
+
+ size = lseek(fd, 0, SEEK_END);
+ *data = g_malloc0(size);
+ lseek(fd, 0, SEEK_SET);
+ rc = read(fd, *data, size);
+ if (rc != size) {
+ fprintf(stderr, "file %-20s: read error: rc=%zd (expected %zd)\n",
+ file, rc, size);
+ goto err;
+ }
+ close(fd);
+ return size;
+err:
+ if (fd != -1)
+ close(fd);
+ g_free(*data);
+ return -1;
+}
+
/* read()-like version */
ssize_t read_targphys(const char *name,
int fd, target_phys_addr_t dst_addr, size_t nbytes)
@@ -568,38 +598,22 @@ int rom_add_file(const char *file, const char *fw_dir,
target_phys_addr_t addr, int32_t bootindex)
{
Rom *rom;
- int rc, fd = -1;
char devpath[100];
rom = g_malloc0(sizeof(*rom));
rom->name = g_strdup(file);
+ rom->addr = addr;
rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
if (rom->path == NULL) {
rom->path = g_strdup(file);
}
- fd = open(rom->path, O_RDONLY | O_BINARY);
- if (fd == -1) {
- fprintf(stderr, "Could not open option rom '%s': %s\n",
- rom->path, strerror(errno));
- goto err;
- }
-
if (fw_dir) {
rom->fw_dir = g_strdup(fw_dir);
rom->fw_file = g_strdup(file);
}
- rom->addr = addr;
- rom->romsize = lseek(fd, 0, SEEK_END);
- rom->data = g_malloc0(rom->romsize);
- lseek(fd, 0, SEEK_SET);
- rc = read(fd, rom->data, rom->romsize);
- if (rc != rom->romsize) {
- fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
- rom->name, rc, rom->romsize);
- goto err;
- }
- close(fd);
+
+ rom->romsize = file_load(rom->path, &rom->data);
rom_insert(rom);
if (rom->fw_file && fw_cfg) {
const char *basename;
@@ -621,15 +635,6 @@ int rom_add_file(const char *file, const char *fw_dir,
add_boot_device_path(bootindex, NULL, devpath);
return 0;
-
-err:
- if (fd != -1)
- close(fd);
- g_free(rom->data);
- g_free(rom->path);
- g_free(rom->name);
- g_free(rom);
- return -1;
}
int rom_add_blob(const char *name, const void *blob, size_t len,
--
1.7.1
- [Qemu-ppc] [PATCH 1/2] extract file_load() function from rom_add_file() for reusing,
Olivia Yin <=