github.com/google/syzkaller@v0.0.0-20251211124644-a066d2bc4b02/tools/syz-declextract/testdata/file_operations.c (about)

     1  // Copyright 2024 syzkaller project authors. All rights reserved.
     2  // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
     3  
     4  #include "include/fs.h"
     5  #include "include/uapi/file_operations.h"
     6  #include "include/uapi/unused_ioctl.h"
     7  
     8  enum {
     9  	FOO_IOCTL12 = _IOR('c', 12, int),
    10  };
    11  
    12  enum {
    13  	config_foo
    14  };
    15  
    16  static void foo_open() {}
    17  static void foo_read() {}
    18  static void foo_write() {}
    19  static void foo_mmap() {}
    20  static void foo_mmap2() {}
    21  
    22  static void foo_ioctl2(unsigned int cmd, unsigned long arg) {
    23  	switch (cmd) {
    24  	case FOO_IOCTL6:
    25  	case FOO_IOCTL7:
    26  	default:
    27  	}
    28  }
    29  
    30  static void foo_ioctl(void* file, unsigned int cmd, unsigned long arg) {
    31  	switch (cmd) {
    32  	case FOO_IOCTL1:
    33  	case FOO_IOCTL2:
    34  	case FOO_IOCTL3:
    35  	case FOO_IOCTL4:
    36  	case FOO_IOCTL5:
    37  	case FOO_IOCTL10:
    38  	case FOO_IOCTL11:
    39  	case FOO_IOCTL12:
    40  	}
    41  	foo_ioctl2(cmd, arg);
    42  }
    43  
    44  const struct file_operations foo = {
    45  	.open = foo_open,
    46  	.read = foo_read,
    47  	.write = foo_write,
    48  	.unlocked_ioctl = foo_ioctl,
    49  	// Such code happens after macro expansion,
    50  	// we want to extract the first function name.
    51  	.mmap = ((config_foo) ? foo_mmap : foo_mmap2),
    52  };
    53  
    54  static void proc_open() {}
    55  static void proc_read() {}
    56  static void proc_write() {}
    57  static void proc_ioctl(void* file, unsigned int cmd, unsigned long arg) {}
    58  
    59  const struct file_operations proc_ops[] = {
    60  	{
    61  		.open = proc_open,
    62  		.read_iter = proc_read,
    63  		.write_iter = proc_write,
    64  	},
    65  	{
    66  		.open = proc_open,
    67  		.unlocked_ioctl = proc_ioctl,
    68  	},
    69  };
    70  
    71  #define UNUSED_IOCTL2		_IO('c', 2)
    72  
    73  static void unused_ioctl(void* file, unsigned int cmd, unsigned long arg) {
    74  	switch (cmd) {
    75  	case UNUSED_IOCTL1:
    76  	case UNUSED_IOCTL2:
    77  	}
    78  }
    79  
    80  const struct file_operations unused = {
    81  	.unlocked_ioctl = unused_ioctl,
    82  };