49 lines
884 B
C
49 lines
884 B
C
#include "lslib.h"
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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void* xalloc(size_t size) {
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void *ptr = malloc(size);
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if (ptr == NULL && size != 0) die();
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return ptr;
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}
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void* xrealloc(void* ptr, size_t size) {
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ptr = realloc(ptr, size);
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if (ptr == NULL && size != 0) die();
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return ptr;
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}
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void* xzalloc(size_t size) {
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void* ptr = xalloc(size);
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memset(ptr, 0, size);
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return ptr;
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}
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void xsetenv(const char *name, const char *value) {
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if (setenv(name, value, 1))
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error("cannot set env");
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}
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void xsetuid(uid_t uid) {
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if (setuid(uid))
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error("cannot set uid");
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}
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void xsetgid(gid_t gid) {
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if (setgid(gid))
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error("cannot set gid");
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}
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struct passwd* xgetpwnam(char* name) {
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struct passwd* pw;
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pw = getpwnam(name);
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if (!pw)
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error("cannot get user: '%s'", name);
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return pw;
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}
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