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qemu-config: qemu_read_config_file() reads the normal config file 

Introduce a new function qemu_read_config_file which reads the VM configuration
from a config file. Unlike qemu_config_parse it doesn't take a open file but a
filename and reduces code duplication as a side effect.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2010-03-05 17:25:55 +01:00
parent 6c557ab975
commit dcfb0939bd
3 changed files with 28 additions and 24 deletions
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15
qemu-config.c
View File

@ -488,3 +488,18 @@ out:
loc_pop(&loc); loc_pop(&loc);
return res; return res;
} }
int qemu_read_config_file(const char *filename)
{
FILE *f = fopen(filename, "r");
if (f == NULL) {
return -errno;
}
if (qemu_config_parse(f, filename) != 0) {
return -EINVAL;
}
fclose(f);
return 0;
}

2
qemu-config.h
View File

@ -19,4 +19,6 @@ void qemu_add_globals(void);
void qemu_config_write(FILE *fp); void qemu_config_write(FILE *fp);
int qemu_config_parse(FILE *fp, const char *fname); int qemu_config_parse(FILE *fp, const char *fname);
int qemu_read_config_file(const char *filename);
#endif /* QEMU_CONFIG_H */ #endif /* QEMU_CONFIG_H */

35
vl.c
View File

@ -2653,25 +2653,16 @@ int main(int argc, char **argv, char **envp)
} }
if (defconfig) { if (defconfig) {
const char *fname; int ret;
FILE *fp;
fname = CONFIG_QEMU_CONFDIR "/qemu.conf"; ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
fp = fopen(fname, "r"); if (ret == -EINVAL) {
if (fp) { exit(1);
if (qemu_config_parse(fp, fname) != 0) {
exit(1);
}
fclose(fp);
} }
fname = arch_config_name; ret = qemu_read_config_file(arch_config_name);
fp = fopen(fname, "r"); if (ret == -EINVAL) {
if (fp) { exit(1);
if (qemu_config_parse(fp, fname) != 0) {
exit(1);
}
fclose(fp);
} }
} }
cpudef_init(); cpudef_init();
@ -3327,16 +3318,12 @@ int main(int argc, char **argv, char **envp)
break; break;
case QEMU_OPTION_readconfig: case QEMU_OPTION_readconfig:
{ {
FILE *fp; int ret = qemu_read_config_file(optarg);
fp = fopen(optarg, "r"); if (ret < 0) {
if (fp == NULL) { fprintf(stderr, "read config %s: %s\n", optarg,
fprintf(stderr, "open %s: %s\n", optarg, strerror(errno)); strerror(-ret));
exit(1); exit(1);
} }
if (qemu_config_parse(fp, optarg) != 0) {
exit(1);
}
fclose(fp);
break; break;
} }
case QEMU_OPTION_writeconfig: case QEMU_OPTION_writeconfig: