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vi: do not truncate file to zero length. closes bug 2944.

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function                                             old     new   delta
file_write                                            98     104      +6
This commit is contained in:
Denis Vlasenko 2008-05-03 11:35:59 +00:00
parent 96b99b860c
commit 8abae88410
1 changed files with 6 additions and 1 deletions
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7
editors/vi.c
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@ -2437,11 +2437,16 @@ static int file_write(char * fn, char * first, char * last)
return -2;
}
charcnt = 0;
fd = open(fn, (O_WRONLY | O_CREAT | O_TRUNC), 0666);
/* By popular request we do not open file with O_TRUNC,
* but instead ftruncate() it _after_ successful write.
* Might reduce amount of data lost on power fail etc.
*/
fd = open(fn, (O_WRONLY | O_CREAT), 0666);
if (fd < 0)
return -1;
cnt = last - first + 1;
charcnt = full_write(fd, first, cnt);
ftruncate(fd, charcnt);
if (charcnt == cnt) {
// good write
//file_modified = FALSE; // the file has not been modified