39 lines
899 B
C
39 lines
899 B
C
#include <kernel/loader.h>
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#include <kernel/fs/vfs.h>
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/* loader_get_header() - get ELF header and check validity */
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int loader_get_header(FILE *file, Elf32_Ehdr *header)
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{
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// Read ELF header.
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if (vfs_pread(file, header, sizeof(Elf32_Ehdr), 0) != sizeof(Elf32_Ehdr))
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return (-1);
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// Check magic number
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if (header->e_ident[EI_MAG0] != ELFMAG0 ||
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header->e_ident[EI_MAG1] != ELFMAG1 ||
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header->e_ident[EI_MAG2] != ELFMAG2 ||
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header->e_ident[EI_MAG3] != ELFMAG3)
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return (-2);
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// Check class
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if (header->e_ident[EI_CLASS] != ELFCLASS32)
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return (-3);
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// Check data encoding
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if (header->e_ident[EI_DATA] != ELFDATA2MSB)
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return (-4);
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// Check ELF type.
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if (header->e_type != ET_DYN)
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return (-5);
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// Check ELF specifique instruction
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if (header->e_machine != EM_SH)
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return (-6);
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// Check ELF version
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if (header->e_version != EV_CURRENT)
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return (-7);
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return (0);
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}
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