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Check return value for setenv()

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This commit is contained in:
Kevin Lo 2007-11-06 10:35:50 +00:00
parent 02f0a39fed
commit ee8f97394e
1 changed files with 7 additions and 3 deletions
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10
usr.bin/du/du.c
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@ -140,16 +140,20 @@ main(int argc, char *argv[])
cflag = 1;
break;
case 'h':
setenv("BLOCKSIZE", "512", 1);
if (setenv("BLOCKSIZE", "512", 1) == -1)
warnx(
"setenv: cannot set BLOCKSIZE=512");
hflag = 1;
break;
case 'k':
hflag = 0;
setenv("BLOCKSIZE", "1024", 1);
if (setenv("BLOCKSIZE", "1024", 1) == -1)
warnx("setenv: cannot set BLOCKSIZE=1024");
break;
case 'm':
hflag = 0;
setenv("BLOCKSIZE", "1048576", 1);
if (setenv("BLOCKSIZE", "1048576", 1) == -1)
warnx("setenv: cannot set BLOCKSIZE=1048576");
break;
case 'n':
nodumpflag = 1;