| 1 |
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| 2 | #ifndef _LINUX_KERNEL_READ_FILE_H
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| 3 | #define _LINUX_KERNEL_READ_FILE_H
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| 4 |
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| 5 | #include <linux/file.h>
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| 6 | #include <linux/types.h>
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| 7 |
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| 8 |
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| 9 | #define __kernel_read_file_id(id) \
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| 10 | id(UNKNOWN, unknown) \
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| 11 | id(FIRMWARE, firmware) \
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| 12 | id(MODULE, kernel-module) \
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| 13 | id(KEXEC_IMAGE, kexec-image) \
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| 14 | id(KEXEC_INITRAMFS, kexec-initramfs) \
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| 15 | id(POLICY, security-policy) \
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| 16 | id(X509_CERTIFICATE, x509-certificate) \
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| 17 | id(MODULE_COMPRESSED, kernel-module-compressed) \
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| 18 | id(MAX_ID, )
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| 19 |
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| 20 | #define __fid_enumify(ENUM, dummy) READING_ ## ENUM,
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| 21 | #define __fid_stringify(dummy, str) #str,
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| 22 |
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| 23 | enum kernel_read_file_id {
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| 24 | __kernel_read_file_id(__fid_enumify)
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| 25 | };
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| 26 |
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| 27 | static const char * const kernel_read_file_str[] = {
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| 28 | __kernel_read_file_id(__fid_stringify)
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| 29 | };
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| 30 |
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| 31 | static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
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| 32 | {
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| 33 | if ((unsigned int)id >= READING_MAX_ID)
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| 34 | return kernel_read_file_str[READING_UNKNOWN];
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| 35 |
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| 36 | return kernel_read_file_str[id];
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| 37 | }
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| 38 |
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| 39 | ssize_t kernel_read_file(struct file *file, loff_t offset,
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| 40 | void **buf, size_t buf_size,
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| 41 | size_t *file_size,
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| 42 | enum kernel_read_file_id id);
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| 43 | ssize_t kernel_read_file_from_path(const char *path, loff_t offset,
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| 44 | void **buf, size_t buf_size,
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| 45 | size_t *file_size,
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| 46 | enum kernel_read_file_id id);
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| 47 | ssize_t kernel_read_file_from_path_initns(const char *path, loff_t offset,
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| 48 | void **buf, size_t buf_size,
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| 49 | size_t *file_size,
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| 50 | enum kernel_read_file_id id);
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| 51 | ssize_t kernel_read_file_from_fd(int fd, loff_t offset,
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| 52 | void **buf, size_t buf_size,
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| 53 | size_t *file_size,
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| 54 | enum kernel_read_file_id id);
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| 55 |
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| 56 | #endif
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