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Introduce xAsprintf as checked version of asprintf

This commit is contained in:
Christian Göttsche 2020-08-21 10:37:29 +02:00
parent 40ac7a88af
commit 3856bf574b
3 changed files with 14 additions and 4 deletions
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6
XAlloc.c
View File

@ -14,7 +14,7 @@
#include <stdlib.h>
}*/
static inline void fail() {
void fail() {
curs_set(1);
endwin();
err(1, NULL);
@ -44,6 +44,10 @@ void* xRealloc(void* ptr, size_t size) {
return data;
}
#undef xAsprintf
#define xAsprintf(strp, fmt, ...) do { int _r=asprintf(strp, fmt, __VA_ARGS__); if (_r < 0) { fail(); } } while(0)
#define xSnprintf(fmt, len, ...) do { int _l=len; int _n=snprintf(fmt, _l, __VA_ARGS__); if (!(_n > -1 && _n < _l)) { curs_set(1); endwin(); err(1, NULL); } } while(0)
#undef xStrdup

6
XAlloc.h
View File

@ -11,12 +11,18 @@
#include <assert.h>
#include <stdlib.h>
extern void fail(void);
extern void* xMalloc(size_t size);
extern void* xCalloc(size_t nmemb, size_t size);
extern void* xRealloc(void* ptr, size_t size);
#undef xAsprintf
#define xAsprintf(strp, fmt, ...) do { int _r=asprintf(strp, fmt, __VA_ARGS__); if (_r < 0) { fail(); } } while(0)
#define xSnprintf(fmt, len, ...) do { int _l=len; int _n=snprintf(fmt, _l, __VA_ARGS__); if (!(_n > -1 && _n < _l)) { curs_set(1); endwin(); err(1, NULL); } } while(0)
#undef xStrdup

6
linux/LinuxProcessList.c
View File

@ -822,11 +822,11 @@ static char* LinuxProcessList_updateTtyDevice(TtyDriver* ttyDrivers, unsigned in
struct stat sstat;
char* fullPath;
for(;;) {
asprintf(&fullPath, "%s/%d", ttyDrivers[i].path, idx);
xAsprintf(&fullPath, "%s/%d", ttyDrivers[i].path, idx);
int err = stat(fullPath, &sstat);
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) return fullPath;
free(fullPath);
asprintf(&fullPath, "%s%d", ttyDrivers[i].path, idx);
xAsprintf(&fullPath, "%s%d", ttyDrivers[i].path, idx);
err = stat(fullPath, &sstat);
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) return fullPath;
free(fullPath);
@ -837,7 +837,7 @@ static char* LinuxProcessList_updateTtyDevice(TtyDriver* ttyDrivers, unsigned in
if (err == 0 && tty_nr == sstat.st_rdev) return strdup(ttyDrivers[i].path);
}
char* out;
asprintf(&out, "/dev/%u:%u", maj, min);
xAsprintf(&out, "/dev/%u:%u", maj, min);
return out;
}