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proc/devname.c: Never write more than "chop" (part 2).

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"chop" is the maximum offset where the null-byte should be written;
respect this even if about to write just one (non-null) character.
This commit is contained in:
Qualys Security Advisory 1970-01-01 00:00:00 +00:00 committed by Craig Small
parent 6b7ceb36a4
commit 3244e7ddb0
1 changed files with 1 additions and 1 deletions
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2
proc/devname.c
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@ -341,7 +341,7 @@ unsigned dev_to_tty(char *restrict ret, unsigned chop, dev_t dev_t_dev, int pid,
if( link_name(tmp, MAJOR_OF(dev), MINOR_OF(dev), pid, "fd/255")) goto abbrev; if( link_name(tmp, MAJOR_OF(dev), MINOR_OF(dev), pid, "fd/255")) goto abbrev;
// fall through if unable to find a device file // fall through if unable to find a device file
no_tty: no_tty:
strcpy(ret, "?"); strcpy(ret, chop >= 1 ? "?" : "");
return 1; return 1;
abbrev: abbrev:
if((flags&ABBREV_DEV) && !strncmp(tmp,"/dev/",5) && tmp[5]) tmp += 5; if((flags&ABBREV_DEV) && !strncmp(tmp,"/dev/",5) && tmp[5]) tmp += 5;