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New OS adapter burn_os_is_2k_seekrw() replaces S_ISBLK() with pseudo-drives

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This commit is contained in:
Thomas Schmitt
2010-01-16 12:51:24 +00:00
parent 7ead54c8b9
commit 39fd8b922d
8 changed files with 224 additions and 35 deletions
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23
libburn/sg-linux.c
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@ -71,6 +71,11 @@ sg_issue_command() sends a SCSI command to the drive, receives reply,
sg_obtain_scsi_adr() tries to obtain SCSI address parameters.
burn_os_is_2k_seekrw() tells whether the given path leads to a file object
that can be used in 2 kB granularity by lseek(2),
read(2), and possibly write(2).
E.g. a USB stick or a hard disk.
burn_os_stdio_capacity() estimates the emulated media space of stdio-drives.
burn_os_open_track_src() opens a disk file in a way that allows best
@ -2050,6 +2055,24 @@ int sg_is_enumerable_adr(char *adr)
}
/* ts B00115 */
/* Return 1 if the given path leads to a regular file or a device that can be
seeked, read, and possibly written with 2 kB granularity.
*/
int burn_os_is_2k_seekrw(char *path, int flag)
{
struct stat stbuf;
if (stat(path, &stbuf) == -1)
return 0;
if (S_ISREG(stbuf.st_mode))
return 1;
if (S_ISBLK(stbuf.st_mode))
return 1;
return 0;
}
/* ts A70909 */
/** Estimate the potential payload capacity of a file address.
@param path The address of the file to be examined. If it does not