suckless/slstatus
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Merge pull request #38 from stoeckmann/terminating-nul

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Fixed out of boundary write on long lines.
This commit is contained in:
Aaron Marcher 2017-04-02 15:27:09 +02:00 committed by GitHub
commit 1289bdb742
1 changed files with 6 additions and 6 deletions
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12
slstatus.c
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@ -447,9 +447,9 @@ run_command(const char *cmd)
warn("Failed to get command output for %s", cmd); warn("Failed to get command output for %s", cmd);
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
} }
fgets(buf, sizeof(buf), fp); fgets(buf, sizeof(buf) - 1, fp);
pclose(fp); pclose(fp);
buf[sizeof(buf)] = '\0'; buf[sizeof(buf) - 1] = '\0';
if ((nlptr = strstr(buf, "\n")) != NULL) { if ((nlptr = strstr(buf, "\n")) != NULL) {
nlptr[0] = '\0'; nlptr[0] = '\0';
@ -473,7 +473,7 @@ swap_free(void)
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
} }
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) { if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
warn("swap_free: read error"); warn("swap_free: read error");
fclose(fp); fclose(fp);
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
@ -510,7 +510,7 @@ swap_perc(void)
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
} }
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) { if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
warn("swap_perc: read error"); warn("swap_perc: read error");
fclose(fp); fclose(fp);
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
@ -551,7 +551,7 @@ swap_total(void)
warn("Failed to open file /proc/meminfo"); warn("Failed to open file /proc/meminfo");
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
} }
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) { if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
warn("swap_total: read error"); warn("swap_total: read error");
fclose(fp); fclose(fp);
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
@ -582,7 +582,7 @@ swap_used(void)
warn("Failed to open file /proc/meminfo"); warn("Failed to open file /proc/meminfo");
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);
} }
if ((bytes_read = fread(buf, sizeof(char), sizeof(buf), fp)) == 0) { if ((bytes_read = fread(buf, sizeof(char), sizeof(buf) - 1, fp)) == 0) {
warn("swap_used: read error"); warn("swap_used: read error");
fclose(fp); fclose(fp);
return smprintf("%s", UNKNOWN_STR); return smprintf("%s", UNKNOWN_STR);