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

   1 #include "defs.h"
   2
   3 #ifdef HAVE_SYS_XATTR_H
   4 # include <sys/xattr.h>
   5 #endif
   6
   7 #include "xlat/xattrflags.h"
   8
   9 static void
  10 print_xattr_val(struct tcb *tcp,
  11                 unsigned long addr,
  12                 unsigned long insize,
  13                 unsigned long size)
  14 {
  15         char *buf;
  16         unsigned int len;
  17
  18         if (insize == 0)
  19                 goto failed;
  20
  21         len = size;
  22         if (size != (unsigned long) len)
  23                 goto failed;
  24
  25         if (!len) {
  26                 tprintf(", \"\", %ld", insize);
  27                 return;
  28         }
  29
  30         buf = malloc(len);
  31         if (!buf)
  32                 goto failed;
  33
  34         if (umoven(tcp, arg, len, buf) < 0) {
  35                 free(buf);
  36                 goto failed;
  37         }
  38
  39         /* Don't print terminating NUL if there is one. */
  40         if (buf[len - 1] == '\0')
  41                 --len;
  42
  43         tprints(", ");
  44         print_quoted_string(buf, len, 0);
  45         tprintf(", %ld", insize);
  46
  47         free(buf);
  48         return;
  49
  50 failed:
  51         tprintf(", 0x%lx, %ld", arg, insize);
  52 }
  53
  54 SYS_FUNC(setxattr)
  55 {
  56         if (entering(tcp)) {
  57                 printpath(tcp, tcp->u_arg[0]);
  58                 tprints(", ");
  59                 printstr(tcp, tcp->u_arg[1], -1);
  60                 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
  61                 tprints(", ");
  62                 printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
  63         }
  64         return 0;
  65 }
  66
  67 SYS_FUNC(fsetxattr)
  68 {
  69         if (entering(tcp)) {
  70                 printfd(tcp, tcp->u_arg[0]);
  71                 tprints(", ");
  72                 printstr(tcp, tcp->u_arg[1], -1);
  73                 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[3]);
  74                 tprints(", ");
  75                 printflags(xattrflags, tcp->u_arg[4], "XATTR_???");
  76         }
  77         return 0;
  78 }
  79
  80 SYS_FUNC(getxattr)
  81 {
  82         if (entering(tcp)) {
  83                 printpath(tcp, tcp->u_arg[0]);
  84                 tprints(", ");
  85                 printstr(tcp, tcp->u_arg[1], -1);
  86         } else {
  87                 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
  88         }
  89         return 0;
  90 }
  91
  92 SYS_FUNC(fgetxattr)
  93 {
  94         if (entering(tcp)) {
  95                 printfd(tcp, tcp->u_arg[0]);
  96                 tprints(", ");
  97                 printstr(tcp, tcp->u_arg[1], -1);
  98         } else {
  99                 print_xattr_val(tcp, tcp->u_arg[2], tcp->u_arg[3], tcp->u_rval);
 100         }
 101         return 0;
 102 }
 103
 104 static void
 105 print_xattr_list(struct tcb *tcp, unsigned long addr, unsigned long size)
 106 {
 107         if (syserror(tcp)) {
 108                 printaddr(addr);
 109         } else {
 110                 unsigned long len =
 111                         (size < (unsigned long) tcp->u_rval) ?
 112                                 size : (unsigned long) tcp->u_rval;
 113                 printstr(tcp, addr, len);
 114         }
 115         tprintf(", %lu", size);
 116 }
 117
 118 SYS_FUNC(listxattr)
 119 {
 120         if (entering(tcp)) {
 121                 printpath(tcp, tcp->u_arg[0]);
 122                 tprints(", ");
 123         } else {
 124                 print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
 125         }
 126         return 0;
 127 }
 128
 129 SYS_FUNC(flistxattr)
 130 {
 131         if (entering(tcp)) {
 132                 printfd(tcp, tcp->u_arg[0]);
 133                 tprints(", ");
 134         } else {
 135                 print_xattr_list(tcp, tcp->u_arg[1], tcp->u_arg[2]);
 136         }
 137         return 0;
 138 }
 139
 140 SYS_FUNC(removexattr)
 141 {
 142         if (entering(tcp)) {
 143                 printpath(tcp, tcp->u_arg[0]);
 144                 tprints(", ");
 145                 printstr(tcp, tcp->u_arg[1], -1);
 146         }
 147         return 0;
 148 }
 149
 150 SYS_FUNC(fremovexattr)
 151 {
 152         if (entering(tcp)) {
 153                 printfd(tcp, tcp->u_arg[0]);
 154                 tprints(", ");
 155                 printstr(tcp, tcp->u_arg[1], -1);
 156         }
 157         return 0;
 158 }