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fix some bugs in biosdisk.

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okuji 1999-09-10 01:46:09 +00:00
parent f2151e4b57
commit 82889257ad
2 changed files with 22 additions and 6 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
1999-09-10 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* grub/asmstub.c (_FILE_OFFSET_BITS): Defined.
(biosdisk) [!__linux__]: Pass the offset argument as off_t
instead of int to lseek, and compare the return value with
OFFSET. Reported by Pavel Roskin.
(grub_stage2) [!__linux__ && !__GNU__]: Print a warning message.
1999-09-08 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>
* stage2/stage2.c (run_menu): If run_script is successfully

16
grub/asmstub.c
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@ -20,6 +20,8 @@
/* Try to use glibc's transparant LFS support. */
#define _LARGEFILE_SOURCE 1
/* lseek becomes synonymous with lseek64. */
#define _FILE_OFFSET_BITS 64
/* Simulator entry point. */
int grub_stage2 (void);
@ -154,8 +156,10 @@ grub_stage2 (void)
char buf[512];
#ifdef __linux__
char unit = 'a' + i;
#else
#elif defined(__GNU__)
char unit = '0' + i;
#else
#warning "BIOS drives cannot be guessed in your operating system."
#endif
sprintf (name, "/dev/hd%c", unit);
@ -204,7 +208,7 @@ grub_stage2 (void)
assert (name);
#ifdef __linux__
sprintf (name, "/dev/sd%c", i + 'a');
#else
#elif defined(__GNU__)
sprintf (name, "/dev/sd%d", i);
#endif
device_map[num_hd++ + 0x80] = name;
@ -755,9 +759,13 @@ biosdisk (int subfunc, int drive, struct geometry *geometry,
return -1;
}
#else
if (lseek (fd, sector * SECTOR_SIZE, SEEK_SET))
{
off_t offset = (off_t) sector * (off_t) SECTOR_SIZE;
if (lseek (fd, offset, SEEK_SET) != offset)
return -1;
#endif /* __linux__ */
}
#endif
buf = (char *) (segment << 4);