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The check for EROFS was wrong. For example, if you try to mount a filesystem 

appended to an executable that's being run (yes, I'm doing this) you get
EPERM, but mounting readonly fixes it.  Doing the fallback all the time
shouldn't hurt, and is one less test.
1_1_stable
Rob Landley 2005-10-11 07:26:15 +00:00
parent 554a9ff7ea
commit ff567f7943
1 changed files with 3 additions and 4 deletions
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7
libbb/loop.c
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@ -88,10 +88,9 @@ extern int set_loop(char **device, const char *file, int offset)
int i, dfd, ffd, mode, rc=1;
// Open the file. Barf if this doesn't work.
if((ffd = open(file, mode=O_RDWR))<0)
if(errno!=EROFS || (ffd=open(file,mode=O_RDONLY))<0)
return errno;
if((ffd = open(file, mode=O_RDWR))<0 && (ffd = open(file,mode=O_RDONLY))<0)
return errno;
// Find a loop device
for(i=0;rc;i++) {
sprintf(dev, LOOP_FORMAT, i++);