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| author | Gabriel L. Somlo <somlo@cmu.edu> | 2015-04-29 11:21:52 -0400 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2015-06-10 08:00:37 +0200 |
| commit | 0eb973f91521c6bcb6399d25327711d083f6eb10 (patch) | |
| tree | 3c9017165a05ed9f72b2371ff2c931f6029065ac | |
| parent | 0f9b214139d11ef058fa0f1c11c89e94fa6ef95d (diff) | |
| download | qemu-0eb973f91521c6bcb6399d25327711d083f6eb10.zip qemu-0eb973f91521c6bcb6399d25327711d083f6eb10.tar.gz qemu-0eb973f91521c6bcb6399d25327711d083f6eb10.tar.bz2 | |
fw_cfg: prohibit insertion of duplicate fw_cfg file names
Exit with an error (instead of simply logging a trace event)
whenever the same fw_cfg file name is added multiple times via
one of the fw_cfg_add_file[_callback]() host-side API calls.
Signed-off-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | hw/nvram/fw_cfg.c | 11 | ||||
| -rw-r--r-- | trace-events | 1 |
2 files changed, 6 insertions, 6 deletions
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 0c0e15e..88481b7 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -515,18 +515,19 @@ void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, index = be32_to_cpu(s->files->count); assert(index < FW_CFG_FILE_SLOTS); - fw_cfg_add_bytes_read_callback(s, FW_CFG_FILE_FIRST + index, - callback, callback_opaque, data, len); - pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name), filename); 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; + error_report("duplicate fw_cfg file name: %s", + s->files->f[index].name); + exit(1); } } + fw_cfg_add_bytes_read_callback(s, FW_CFG_FILE_FIRST + index, + callback, callback_opaque, data, len); + s->files->f[index].size = cpu_to_be32(len); s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index); trace_fw_cfg_add_file(s, index, s->files->f[index].name, len); diff --git a/trace-events b/trace-events index 27d4ba7..9a29df7 100644 --- a/trace-events +++ b/trace-events @@ -195,7 +195,6 @@ ecc_diag_mem_readb(uint64_t addr, uint32_t ret) "Read diagnostic %"PRId64"= %02x # hw/nvram/fw_cfg.c fw_cfg_select(void *s, uint16_t key, int ret) "%p key %d = %d" fw_cfg_read(void *s, uint8_t ret) "%p = %d" -fw_cfg_add_file_dupe(void *s, char *name) "%p %s" fw_cfg_add_file(void *s, int index, char *name, size_t len) "%p #%d: %s (%zd bytes)" # hw/block/hd-geometry.c |