login/utmpname.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __utmpname
   4         .hidden __utmpname
   5         .type   __utmpname, @function
   6 __utmpname:
   7         pushq   %r12
   8         pushq   %rbp
   9         movq    %rdi, %rbp
  10         pushq   %rbx
  11 #APP
  12 # 42 "utmpname.c" 1
  13         movl %fs:24,%eax
  14 # 0 "" 2
  15 #NO_APP
  16         testl   %eax, %eax
  17         jne     .L2
  18         movl    $1, %edx
  19 #APP
  20 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  21         cmpxchgl %edx, __libc_utmp_lock(%rip)
  22 # 0 "" 2
  23 #NO_APP
  24 .L3:
  25         call    __libc_endutent
  26         movq    __libc_utmp_file_name(%rip), %r12
  27         movq    %rbp, %rdi
  28         movq    %r12, %rsi
  29         call    strcmp
  30         testl   %eax, %eax
  31         movl    %eax, %ebx
  32         je      .L4
  33         leaq    default_file_name(%rip), %rsi
  34         movq    %rbp, %rdi
  35         call    strcmp
  36         testl   %eax, %eax
  37         movl    %eax, %ebx
  38         je      .L15
  39         movq    %rbp, %rdi
  40         call    __strdup
  41         testq   %rax, %rax
  42         movq    %rax, %rbx
  43         je      .L9
  44         movq    __libc_utmp_file_name(%rip), %rdi
  45         leaq    default_file_name(%rip), %rax
  46         cmpq    %rax, %rdi
  47         je      .L6
  48         call    free@PLT
  49 .L6:
  50         movq    %rbx, __libc_utmp_file_name(%rip)
  51         xorl    %ebx, %ebx
  52 .L4:
  53 #APP
  54 # 72 "utmpname.c" 1
  55         movl %fs:24,%eax
  56 # 0 "" 2
  57 #NO_APP
  58         testl   %eax, %eax
  59         jne     .L7
  60         subl    $1, __libc_utmp_lock(%rip)
  61 .L1:
  62         movl    %ebx, %eax
  63         popq    %rbx
  64         popq    %rbp
  65         popq    %r12
  66         ret
  67         .p2align 4,,10
  68         .p2align 3
  69 .L15:
  70         movq    %r12, %rdi
  71         call    free@PLT
  72         leaq    default_file_name(%rip), %rax
  73         movq    %rax, __libc_utmp_file_name(%rip)
  74         jmp     .L4
  75         .p2align 4,,10
  76         .p2align 3
  77 .L7:
  78         xorl    %eax, %eax
  79 #APP
  80 # 72 "utmpname.c" 1
  81         xchgl %eax, __libc_utmp_lock(%rip)
  82 # 0 "" 2
  83 #NO_APP
  84         cmpl    $1, %eax
  85         jle     .L1
  86         xorl    %r10d, %r10d
  87         movl    $1, %edx
  88         movl    $129, %esi
  89         leaq    __libc_utmp_lock(%rip), %rdi
  90         movl    $202, %eax
  91 #APP
  92 # 72 "utmpname.c" 1
  93         syscall
  94
  95 # 0 "" 2
  96 #NO_APP
  97         jmp     .L1
  98         .p2align 4,,10
  99         .p2align 3
 100 .L2:
 101         xorl    %eax, %eax
 102         movl    $1, %edx
 103         lock cmpxchgl   %edx, __libc_utmp_lock(%rip)
 104         je      .L3
 105         leaq    __libc_utmp_lock(%rip), %rdi
 106         call    __lll_lock_wait_private
 107         jmp     .L3
 108 .L9:
 109         movl    $-1, %ebx
 110         jmp     .L4
 111         .size   __utmpname, .-__utmpname
 112         .weak   utmpname
 113         .set    utmpname,__utmpname
 114         .hidden __libc_utmp_file_name
 115         .globl  __libc_utmp_file_name
 116         .section        .data.rel.local,"aw",@progbits
 117         .align 8
 118         .type   __libc_utmp_file_name, @object
 119         .size   __libc_utmp_file_name, 8
 120 __libc_utmp_file_name:
 121         .quad   default_file_name
 122         .section        .rodata.str1.8,"aMS",@progbits,1
 123         .align 8
 124         .type   default_file_name, @object
 125         .size   default_file_name, 14
 126 default_file_name:
 127         .string "/var/run/utmp"
 128         .hidden __lll_lock_wait_private
 129         .hidden __strdup
 130         .hidden strcmp
 131         .hidden __libc_endutent
 132         .hidden __libc_utmp_lock