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os: Factor out CHECK_FOR_REQUIRED_ARGUMENTS 

Lifted from vfb. xfree86 had almost the same thing but unparameterized,
port it to the vfb style.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Adam Jackson 2018-10-23 14:28:21 -04:00 committed by Adam Jackson
parent b45c74f0f2
commit 8d048a1fd3
3 changed files with 20 additions and 27 deletions
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7
hw/vfb/InitOutput.c
View File

@ -264,13 +264,6 @@ ddxProcessArgument(int argc, char *argv[], int i)
else
currentScreen = &vfbScreens[lastScreen];
#define CHECK_FOR_REQUIRED_ARGUMENTS(num) \
if (((i + num) >= argc) || (!argv[i + num])) { \
ErrorF("Required argument to %s not specified\n", argv[i]); \
UseMsg(); \
FatalError("Required argument to %s not specified\n", argv[i]); \
}
if (strcmp(argv[i], "-screen") == 0) { /* -screen n WxHxD */
int screenNum;

33
hw/xfree86/common/xf86Init.c
View File

@ -925,16 +925,9 @@ xf86CheckPrivs(const char *option, const char *arg)
int
ddxProcessArgument(int argc, char **argv, int i)
{
#define CHECK_FOR_REQUIRED_ARGUMENT() \
if (((i + 1) >= argc) || (!argv[i + 1])) { \
ErrorF("Required argument to %s not specified\n", argv[i]); \
UseMsg(); \
FatalError("Required argument to %s not specified\n", argv[i]); \
}
/* First the options that are not allowed with elevated privileges */
if (!strcmp(argv[i], "-modulepath")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (xf86PrivsElevated())
FatalError("\nInvalid argument -modulepath "
"with elevated privileges\n");
@ -943,7 +936,7 @@ ddxProcessArgument(int argc, char **argv, int i)
return 2;
}
if (!strcmp(argv[i], "-logfile")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (xf86PrivsElevated())
FatalError("\nInvalid argument -logfile "
"with elevated privileges\n");
@ -952,13 +945,13 @@ ddxProcessArgument(int argc, char **argv, int i)
return 2;
}
if (!strcmp(argv[i], "-config") || !strcmp(argv[i], "-xf86config")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86CheckPrivs(argv[i], argv[i + 1]);
xf86ConfigFile = argv[i + 1];
return 2;
}
if (!strcmp(argv[i], "-configdir")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86CheckPrivs(argv[i], argv[i + 1]);
xf86ConfigDir = argv[i + 1];
return 2;
@ -1052,7 +1045,7 @@ ddxProcessArgument(int argc, char **argv, int i)
if (!strcmp(argv[i], "-fbbpp")) {
int bpp;
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (sscanf(argv[++i], "%d", &bpp) == 1) {
xf86FbBpp = bpp;
return 2;
@ -1065,7 +1058,7 @@ ddxProcessArgument(int argc, char **argv, int i)
if (!strcmp(argv[i], "-depth")) {
int depth;
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (sscanf(argv[++i], "%d", &depth) == 1) {
xf86Depth = depth;
return 2;
@ -1078,7 +1071,7 @@ ddxProcessArgument(int argc, char **argv, int i)
if (!strcmp(argv[i], "-weight")) {
int red, green, blue;
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (sscanf(argv[++i], "%1d%1d%1d", &red, &green, &blue) == 3) {
xf86Weight.red = red;
xf86Weight.green = green;
@ -1094,7 +1087,7 @@ ddxProcessArgument(int argc, char **argv, int i)
!strcmp(argv[i], "-ggamma") || !strcmp(argv[i], "-bgamma")) {
double gamma;
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (sscanf(argv[++i], "%lf", &gamma) == 1) {
if (gamma < GAMMA_MIN || gamma > GAMMA_MAX) {
ErrorF("gamma out of range, only %.2f <= gamma_value <= %.1f"
@ -1113,22 +1106,22 @@ ddxProcessArgument(int argc, char **argv, int i)
}
}
if (!strcmp(argv[i], "-layout")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86LayoutName = argv[++i];
return 2;
}
if (!strcmp(argv[i], "-screen")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86ScreenName = argv[++i];
return 2;
}
if (!strcmp(argv[i], "-pointer")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86PointerName = argv[++i];
return 2;
}
if (!strcmp(argv[i], "-keyboard")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
xf86KeyboardName = argv[++i];
return 2;
}
@ -1161,7 +1154,7 @@ ddxProcessArgument(int argc, char **argv, int i)
}
#ifdef XSERVER_LIBPCIACCESS
if (!strcmp(argv[i], "-isolateDevice")) {
CHECK_FOR_REQUIRED_ARGUMENT();
CHECK_FOR_REQUIRED_ARGUMENTS(1);
if (strncmp(argv[++i], "PCI:", 4)) {
FatalError("Bus types other than PCI not yet isolable\n");
}

7
include/os.h
View File

@ -526,6 +526,13 @@ GenerateAuthorization(unsigned int /* name_length */ ,
extern _X_EXPORT int
ddxProcessArgument(int /*argc */ , char * /*argv */ [], int /*i */ );
#define CHECK_FOR_REQUIRED_ARGUMENTS(num) \
do if (((i + num) >= argc) || (!argv[i + num])) { \
UseMsg(); \
FatalError("Required argument to %s not specified\n", argv[i]); \
} while (0)
extern _X_EXPORT void
ddxUseMsg(void);