dergrimm/getauxval-backport
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Dominic Grimm 2025-02-10 21:30:20 +01:00
parent a35c9039b4
commit e11b6cc0b3
2 changed files with 6 additions and 1 deletions
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README.md Normal file
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# getauxval-backport
Simple backport of libc's `getauxval(3)` for legacy glibc

4
getauxval.c
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@ -7,12 +7,14 @@ typedef Elf64_auxv_t __auxv_t;
typedef Elf32_auxv_t __auxv_t; typedef Elf32_auxv_t __auxv_t;
#endif #endif
#define AUXV_FILE "/proc/self/auxv"
unsigned long getauxval(unsigned long type) { unsigned long getauxval(unsigned long type) {
#ifdef GETAUXVAL_BACKPORT_DEBUG #ifdef GETAUXVAL_BACKPORT_DEBUG
printf("getauxval: search started for type: %lu\n", type); printf("getauxval: search started for type: %lu\n", type);
#endif #endif
FILE *f = fopen("/proc/self/auxv", "rb"); FILE *f = fopen(AUXV_FILE, "rb");
if (f == NULL) if (f == NULL)
return 1; return 1;