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cs: get_self_path implementation for FreeBSD

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This commit is contained in:
Alexander B. McLin 2019-06-12 18:23:00 +00:00 committed by Matthew Flatt
parent 85a9bdaaee
commit 9c95e31d26
1 changed files with 30 additions and 0 deletions
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30
racket/src/cs/c/main.c
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@ -98,6 +98,36 @@ static char *get_self_path(char *exec_file)
# undef USE_GENERIC_GET_SELF_PATH
#endif
#if defined(__FreeBSD__)
# include <sys/sysctl.h>
# include <errno.h>
static char *get_self_path(char *exec_file)
{
int mib[4];
char *s;
size_t len;
int r;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
r = sysctl(mib, 4, NULL, &len, NULL, 0);
if (r < 0) {
fprintf(stderr, "failed to get self (%d)\n", errno);
exit(1);
}
s = malloc(len);
r = sysctl(mib, 4, s, &len, NULL, 0);
if (r < 0) {
fprintf(stderr, "failed to get self (%d)\n", errno);
exit(1);
}
return s;
}
# undef USE_GENERIC_GET_SELF_PATH
#endif
#ifdef ELF_FIND_BOOT_SECTION
# include <elf.h>