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add qemu_add_data_dir()

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Add helper function to add a directory to the qemu search path, so we
don't duplicate the checks.  Add a check for duplicate entries, so we
stop trying to open files twice.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170914114236.25343-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-09-14 13:42:35 +02:00
parent 1e3ee83408
commit 2a1cce9058
1 changed files with 23 additions and 11 deletions
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34
vl.c
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@ -2348,6 +2348,24 @@ char *qemu_find_file(int type, const char *name)
return NULL;
}
static void qemu_add_data_dir(const char *path)
{
int i;
if (path == NULL) {
return;
}
if (data_dir_idx == ARRAY_SIZE(data_dir)) {
return;
}
for (i = 0; i < data_dir_idx; i++) {
if (strcmp(data_dir[i], path) == 0) {
return; /* duplicate */
}
}
data_dir[data_dir_idx++] = path;
}
static inline bool nonempty_str(const char *str)
{
return str && *str;
@ -3527,8 +3545,8 @@ int main(int argc, char **argv, char **envp)
case QEMU_OPTION_L:
if (is_help_option(optarg)) {
list_data_dirs = true;
} else if (data_dir_idx < ARRAY_SIZE(data_dir)) {
data_dir[data_dir_idx++] = optarg;
} else {
qemu_add_data_dir(optarg);
}
break;
case QEMU_OPTION_bios:
@ -4293,16 +4311,10 @@ int main(int argc, char **argv, char **envp)
/* If no data_dir is specified then try to find it relative to the
executable path. */
if (data_dir_idx < ARRAY_SIZE(data_dir)) {
data_dir[data_dir_idx] = os_find_datadir();
if (data_dir[data_dir_idx] != NULL) {
data_dir_idx++;
}
}
qemu_add_data_dir(os_find_datadir());
/* If all else fails use the install path specified when building. */
if (data_dir_idx < ARRAY_SIZE(data_dir)) {
data_dir[data_dir_idx++] = CONFIG_QEMU_DATADIR;
}
qemu_add_data_dir(CONFIG_QEMU_DATADIR);
/* -L help lists the data directories and exits. */
if (list_data_dirs) {