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losetup: implement -r option. Closes 4033.

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function                                             old     new   delta
packed_usage                                       28595   28633     +38
losetup_main                                         285     290      +5
singlemount                                          906     908      +2
set_loop                                             674     672      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2011-09-12 02:13:47 +02:00
parent dd1061b6a7
commit 13e709c53f
4 changed files with 17 additions and 13 deletions
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2
include/libbb.h
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@ -1164,7 +1164,7 @@ extern int del_loop(const char *device) FAST_FUNC;
/* If *devname is not NULL, use that name, otherwise try to find free one,
* malloc and return it in *devname.
* return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
extern int set_loop(char **devname, const char *file, unsigned long long offset) FAST_FUNC;
extern int set_loop(char **devname, const char *file, unsigned long long offset, int ro) FAST_FUNC;
/* Like bb_ask below, but asks on stdin with no timeout. */
char *bb_ask_stdin(const char * prompt) FAST_FUNC;