DeforaOS/utils
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ps: detect errors when generating pathnames

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This commit is contained in:
Pierre Pronchery 2020-12-08 14:16:22 +01:00
parent 21c0d11c14
commit e4a3a93b1e
1 changed files with 6 additions and 4 deletions
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10
src/ps.c
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@ -87,9 +87,10 @@ static int _ps(Prefs * prefs)
continue;
if(gr != NULL && st.st_gid != gr->gr_gid)
continue;
snprintf(buf, sizeof(buf), "%s/%s/%s", proc, de->d_name,
"cmdline");
if((fp = fopen(buf, "r")) != NULL)
if(snprintf(buf, sizeof(buf), "%s/%s/%s", proc, de->d_name,
"cmdline") >= (int)sizeof(buf))
buf[0] = '\0';
else if((fp = fopen(buf, "r")) != NULL)
{
s = fread(buf, sizeof(*buf), sizeof(buf) - 1, fp);
fclose(fp);
@ -97,7 +98,8 @@ static int _ps(Prefs * prefs)
}
else
buf[0] = '\0';
printf("%5lu %5lu %s\n", pid, (unsigned long)st.st_uid, buf);
printf("%5lu %5lu%s%s\n", pid, (unsigned long)st.st_uid,
(buf[0] != '\0') ? " " : "", buf);
}
closedir(dir);
return 0;