nptl/shm-directory.s

   1         .text
   2         .section        .rodata.str1.1,"aMS",@progbits,1
   3 .LC0:
   4         .string "r"
   5 .LC1:
   6         .string "/proc/mounts"
   7 .LC2:
   8         .string "/etc/fstab"
   9 .LC3:
  10         .string "tmpfs"
  11 .LC4:
  12         .string "shm"
  13         .text
  14         .p2align 4,,15
  15         .type   where_is_shmfs, @function
  16 where_is_shmfs:
  17         pushq   %r15
  18         pushq   %r14
  19         leaq    defaultdir(%rip), %rdi
  20         pushq   %r13
  21         pushq   %r12
  22         pushq   %rbp
  23         pushq   %rbx
  24         subq    $712, %rsp
  25         leaq    64(%rsp), %rbp
  26         movq    %rbp, %rsi
  27         call    __statfs@PLT
  28         testl   %eax, %eax
  29         jne     .L2
  30         movq    64(%rsp), %rax
  31         cmpq    $16914836, %rax
  32         je      .L16
  33         movl    $2240043254, %edx
  34         cmpq    %rdx, %rax
  35         je      .L16
  36 .L2:
  37         leaq    .LC0(%rip), %rsi
  38         leaq    .LC1(%rip), %rdi
  39         call    __setmntent@PLT
  40         testq   %rax, %rax
  41         movq    %rax, %rbx
  42         je      .L35
  43 .L5:
  44         leaq    192(%rsp), %r13
  45         leaq    16(%rsp), %r12
  46         leaq    .LC3(%rip), %r14
  47 .L12:
  48         movl    $512, %ecx
  49         movq    %r13, %rdx
  50         movq    %r12, %rsi
  51         movq    %rbx, %rdi
  52         call    __getmntent_r@PLT
  53         testq   %rax, %rax
  54         movq    %rax, %r15
  55         je      .L10
  56         movq    16(%r15), %rax
  57         movl    $6, %ecx
  58         movq    %r14, %rdi
  59         movq    %rax, %rsi
  60         repz cmpsb
  61         je      .L6
  62         leaq    .LC4(%rip), %rdi
  63         movl    $4, %ecx
  64         movq    %rax, %rsi
  65         repz cmpsb
  66         jne     .L12
  67 .L6:
  68         movq    8(%r15), %rdi
  69         movq    %rbp, %rsi
  70         call    __statfs@PLT
  71         testl   %eax, %eax
  72         jne     .L12
  73         movq    64(%rsp), %rax
  74         cmpq    $16914836, %rax
  75         je      .L17
  76         movl    $2240043254, %esi
  77         cmpq    %rsi, %rax
  78         jne     .L12
  79 .L17:
  80         movq    8(%r15), %r15
  81         movq    %r15, %rdi
  82         call    strlen@PLT
  83         testq   %rax, %rax
  84         je      .L12
  85         leaq    2(%rax), %rdi
  86         movq    %rax, 8(%rsp)
  87         call    malloc@PLT
  88         testq   %rax, %rax
  89         movq    %rax, %rbp
  90         movq    %rax, mountpoint(%rip)
  91         je      .L10
  92         movq    8(%rsp), %rdx
  93         movq    %r15, %rsi
  94         movq    %rax, %rdi
  95         call    __mempcpy@PLT
  96         cmpb    $47, -1(%rax)
  97         je      .L11
  98         movb    $47, (%rax)
  99         addq    $1, %rax
 100 .L11:
 101         movb    $0, (%rax)
 102         subq    %rbp, %rax
 103         movq    %rax, 8+mountpoint(%rip)
 104 .L10:
 105         movq    %rbx, %rdi
 106         call    __endmntent@PLT
 107 .L1:
 108         addq    $712, %rsp
 109         popq    %rbx
 110         popq    %rbp
 111         popq    %r12
 112         popq    %r13
 113         popq    %r14
 114         popq    %r15
 115         ret
 116         .p2align 4,,10
 117         .p2align 3
 118 .L16:
 119         leaq    defaultdir(%rip), %rax
 120         movq    $9, 8+mountpoint(%rip)
 121         movq    %rax, mountpoint(%rip)
 122         jmp     .L1
 123         .p2align 4,,10
 124         .p2align 3
 125 .L35:
 126         leaq    .LC0(%rip), %rsi
 127         leaq    .LC2(%rip), %rdi
 128         call    __setmntent@PLT
 129         testq   %rax, %rax
 130         movq    %rax, %rbx
 131         jne     .L5
 132         jmp     .L1
 133         .size   where_is_shmfs, .-where_is_shmfs
 134         .p2align 4,,15
 135         .globl  __shm_directory
 136         .type   __shm_directory, @function
 137 __shm_directory:
 138         pushq   %rbx
 139         leaq    where_is_shmfs(%rip), %rsi
 140         movq    %rdi, %rbx
 141         leaq    once(%rip), %rdi
 142         call    __pthread_once@PLT
 143         movq    mountpoint(%rip), %rax
 144         testq   %rax, %rax
 145         je      .L40
 146         movq    8+mountpoint(%rip), %rdx
 147         movq    %rdx, (%rbx)
 148         popq    %rbx
 149         ret
 150         .p2align 4,,10
 151         .p2align 3
 152 .L40:
 153         movq    errno@gottpoff(%rip), %rdx
 154         movl    $38, %fs:(%rdx)
 155         popq    %rbx
 156         ret
 157         .size   __shm_directory, .-__shm_directory
 158         .p2align 4,,15
 159         .globl  __shm_directory_freeres
 160         .type   __shm_directory_freeres, @function
 161 __shm_directory_freeres:
 162         movq    mountpoint(%rip), %rdi
 163         leaq    defaultdir(%rip), %rax
 164         cmpq    %rax, %rdi
 165         je      .L41
 166         jmp     free@PLT
 167         .p2align 4,,10
 168         .p2align 3
 169 .L41:
 170         rep ret
 171         .size   __shm_directory_freeres, .-__shm_directory_freeres
 172         .local  once
 173         .comm   once,4,4
 174         .section        .rodata.str1.8,"aMS",@progbits,1
 175         .align 8
 176         .type   defaultdir, @object
 177         .size   defaultdir, 10
 178 defaultdir:
 179         .string "/dev/shm/"
 180         .local  mountpoint
 181         .comm   mountpoint,16,16
 182         .weak   __pthread_once