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[Qemu-devel] [PATCH 2/8] fw_cfg: Dumb down fw_cfg_add_*() not to return
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 2/8] fw_cfg: Dumb down fw_cfg_add_*() not to return success / failure |
Date: |
Wed, 16 Jan 2013 14:50:23 +0100 |
No caller is checking the value, so all errors get ignored, usually
silently. assert() instead.
Signed-off-by: Markus Armbruster <address@hidden>
---
hw/fw_cfg.c | 43 ++++++++++++++++---------------------------
hw/fw_cfg.h | 16 ++++++++--------
2 files changed, 24 insertions(+), 35 deletions(-)
diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
index 2fadf36..0361f68 100644
--- a/hw/fw_cfg.c
+++ b/hw/fw_cfg.c
@@ -373,71 +373,64 @@ static const VMStateDescription vmstate_fw_cfg = {
}
};
-int fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len)
+void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len)
{
int arch = !!(key & FW_CFG_ARCH_LOCAL);
key &= FW_CFG_ENTRY_MASK;
- if (key >= FW_CFG_MAX_ENTRY)
- return 0;
+ assert(key < FW_CFG_MAX_ENTRY);
s->entries[arch][key].data = data;
s->entries[arch][key].len = len;
-
- return 1;
}
-int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
+void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
{
uint16_t *copy;
copy = g_malloc(sizeof(value));
*copy = cpu_to_le16(value);
- return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
+ fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}
-int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
+void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
{
uint32_t *copy;
copy = g_malloc(sizeof(value));
*copy = cpu_to_le32(value);
- return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
+ fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}
-int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
+void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
{
uint64_t *copy;
copy = g_malloc(sizeof(value));
*copy = cpu_to_le64(value);
- return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
+ fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}
-int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
- void *callback_opaque, uint8_t *data, size_t len)
+void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
+ void *callback_opaque, uint8_t *data, size_t len)
{
int arch = !!(key & FW_CFG_ARCH_LOCAL);
- if (!(key & FW_CFG_WRITE_CHANNEL))
- return 0;
+ assert(key & FW_CFG_WRITE_CHANNEL);
key &= FW_CFG_ENTRY_MASK;
- if (key >= FW_CFG_MAX_ENTRY || len > 65535)
- return 0;
+ assert(key < FW_CFG_MAX_ENTRY && len <= 65535);
s->entries[arch][key].data = data;
s->entries[arch][key].len = len;
s->entries[arch][key].callback_opaque = callback_opaque;
s->entries[arch][key].callback = callback;
-
- return 1;
}
-int fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
- uint32_t len)
+void fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
+ uint32_t len)
{
int i, index;
@@ -448,10 +441,7 @@ int fw_cfg_add_file(FWCfgState *s, const char *filename,
uint8_t *data,
}
index = be32_to_cpu(s->files->count);
- if (index == FW_CFG_FILE_SLOTS) {
- fprintf(stderr, "fw_cfg: out of file slots\n");
- return 0;
- }
+ assert(index < FW_CFG_FILE_SLOTS);
fw_cfg_add_bytes(s, FW_CFG_FILE_FIRST + index, data, len);
@@ -460,7 +450,7 @@ int fw_cfg_add_file(FWCfgState *s, const char *filename,
uint8_t *data,
for (i = 0; i < index; i++) {
if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) {
trace_fw_cfg_add_file_dupe(s, s->files->f[index].name);
- return 1;
+ return;
}
}
@@ -469,7 +459,6 @@ int fw_cfg_add_file(FWCfgState *s, const char *filename,
uint8_t *data,
trace_fw_cfg_add_file(s, index, s->files->f[index].name, len);
s->files->count = cpu_to_be32(index+1);
- return 1;
}
static void fw_cfg_machine_ready(struct Notifier *n, void *data)
diff --git a/hw/fw_cfg.h b/hw/fw_cfg.h
index 619a394..7d32f28 100644
--- a/hw/fw_cfg.h
+++ b/hw/fw_cfg.h
@@ -54,14 +54,14 @@ typedef struct FWCfgFiles {
typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
typedef struct FWCfgState FWCfgState;
-int fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len);
-int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value);
-int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value);
-int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value);
-int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
- void *callback_opaque, uint8_t *data, size_t len);
-int fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
- uint32_t len);
+void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t
len);
+void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value);
+void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value);
+void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value);
+void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
+ void *callback_opaque, uint8_t *data, size_t len);
+void fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
+ uint32_t len);
FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
hwaddr crl_addr, hwaddr data_addr);
--
1.7.11.7
- [Qemu-devel] [PATCH 0/8] Fixes and cleanups around fw_cfg, Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 3/8] fw_cfg: New fw_cfg_add_string(), Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 4/8] pc: Fix unchecked strdup() by switching to fw_cfg_add_string(), Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 7/8] fw_cfg: Use void *, size_t instead of uint8_t *, uint32_t for blobs, Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 1/8] fw_cfg: Replace debug prints by tracepoints, Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 8/8] vl: Use size_t for sizes in get_boot_devices_list(), Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 2/8] fw_cfg: Dumb down fw_cfg_add_*() not to return success / failure,
Markus Armbruster <=
- [Qemu-devel] [PATCH 5/8] sun4: Fix unchecked strdup() by switching to fw_cfg_add_string(), Markus Armbruster, 2013/01/16
- [Qemu-devel] [PATCH 6/8] pc: Clean up bochs_bios_init()'s (non-)use of sizeof, Markus Armbruster, 2013/01/16
- Re: [Qemu-devel] [PATCH 0/8] Fixes and cleanups around fw_cfg, Gleb Natapov, 2013/01/17