granicus.if.org Git - strace/blob - uid.c

   1 #include "defs.h"
   2
   3 #include <asm/posix_types.h>
   4
   5 int
   6 sys_getuid(struct tcb *tcp)
   7 {
   8         if (exiting(tcp))
   9                 tcp->u_rval = (uid_t) tcp->u_rval;
  10         return RVAL_UDECIMAL;
  11 }
  12
  13 int
  14 sys_setfsuid(struct tcb *tcp)
  15 {
  16         if (entering(tcp))
  17                 tprintf("%u", (uid_t) tcp->u_arg[0]);
  18         else
  19                 tcp->u_rval = (uid_t) tcp->u_rval;
  20         return RVAL_UDECIMAL;
  21 }
  22
  23 int
  24 sys_setuid(struct tcb *tcp)
  25 {
  26         if (entering(tcp)) {
  27                 tprintf("%u", (uid_t) tcp->u_arg[0]);
  28         }
  29         return 0;
  30 }
  31
  32 int
  33 sys_getresuid(struct tcb *tcp)
  34 {
  35         if (exiting(tcp)) {
  36                 __kernel_uid_t uid;
  37                 if (syserror(tcp))
  38                         tprintf("%#lx, %#lx, %#lx", tcp->u_arg[0],
  39                                 tcp->u_arg[1], tcp->u_arg[2]);
  40                 else {
  41                         if (umove(tcp, tcp->u_arg[0], &uid) < 0)
  42                                 tprintf("%#lx, ", tcp->u_arg[0]);
  43                         else
  44                                 tprintf("[%lu], ", (unsigned long) uid);
  45                         if (umove(tcp, tcp->u_arg[1], &uid) < 0)
  46                                 tprintf("%#lx, ", tcp->u_arg[1]);
  47                         else
  48                                 tprintf("[%lu], ", (unsigned long) uid);
  49                         if (umove(tcp, tcp->u_arg[2], &uid) < 0)
  50                                 tprintf("%#lx", tcp->u_arg[2]);
  51                         else
  52                                 tprintf("[%lu]", (unsigned long) uid);
  53                 }
  54         }
  55         return 0;
  56 }
  57
  58 int
  59 sys_setreuid(struct tcb *tcp)
  60 {
  61         if (entering(tcp)) {
  62                 printuid("", tcp->u_arg[0]);
  63                 printuid(", ", tcp->u_arg[1]);
  64         }
  65         return 0;
  66 }
  67
  68 int
  69 sys_setresuid(struct tcb *tcp)
  70 {
  71         if (entering(tcp)) {
  72                 printuid("", tcp->u_arg[0]);
  73                 printuid(", ", tcp->u_arg[1]);
  74                 printuid(", ", tcp->u_arg[2]);
  75         }
  76         return 0;
  77 }
  78
  79 int
  80 sys_chown(struct tcb *tcp)
  81 {
  82         if (entering(tcp)) {
  83                 printpath(tcp, tcp->u_arg[0]);
  84                 printuid(", ", tcp->u_arg[1]);
  85                 printuid(", ", tcp->u_arg[2]);
  86         }
  87         return 0;
  88 }
  89
  90 int
  91 sys_fchown(struct tcb *tcp)
  92 {
  93         if (entering(tcp)) {
  94                 printfd(tcp, tcp->u_arg[0]);
  95                 printuid(", ", tcp->u_arg[1]);
  96                 printuid(", ", tcp->u_arg[2]);
  97         }
  98         return 0;
  99 }
 100
 101 void
 102 printuid(const char *text, const unsigned int uid)
 103 {
 104         if ((unsigned int) -1 == uid)
 105                 tprintf("%s-1", text);
 106         else
 107                 tprintf("%s%u", text, uid);
 108 }