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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2006-11-18 22:03:26 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2006-11-18 22:03:26 +0000
commit61126ab30a90b74e45a79ccb97074ab71afa6054 (patch)
treecbc4d021bafef2561cbb37ea0d0c955bfd985401
parent5a3395bc01cd4b11309595a6ecdaf32f8279f378 (diff)
downloadbusybox-61126ab30a90b74e45a79ccb97074ab71afa6054.tar.gz
busybox-61126ab30a90b74e45a79ccb97074ab71afa6054.tar.bz2
small fixes: using fd-based io instead of FILE*-based,
missed O_TRUNC, etc
-rw-r--r--debianutils/start_stop_daemon.c28
-rw-r--r--networking/udhcp/common.c4
-rw-r--r--networking/udhcp/dumpleases.c31
-rw-r--r--networking/udhcp/files.c54
-rw-r--r--networking/udhcp/pidfile.c8
5 files changed, 63 insertions, 62 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c
index a9f82c5cc..6d3877a7c 100644
--- a/debianutils/start_stop_daemon.c
+++ b/debianutils/start_stop_daemon.c
@@ -40,7 +40,8 @@ static inline void push(pid_t pid)
static int pid_is_exec(pid_t pid, const char *name)
{
- char buf[32], *execbuf;
+ char buf[sizeof("/proc//exe") + sizeof(int)*3];
+ char *execbuf;
int equal;
sprintf(buf, "/proc/%d/exe", pid);
@@ -56,7 +57,7 @@ static int pid_is_exec(pid_t pid, const char *name)
static int pid_is_user(int pid, int uid)
{
struct stat sb;
- char buf[32];
+ char buf[sizeof("/proc/") + sizeof(int)*3];
sprintf(buf, "/proc/%d", pid);
if (stat(buf, &sb) != 0)
@@ -66,7 +67,7 @@ static int pid_is_user(int pid, int uid)
static int pid_is_cmd(pid_t pid, const char *name)
{
- char buf[32];
+ char buf[sizeof("/proc//stat") + sizeof(int)*3];
FILE *f;
int c;
@@ -115,7 +116,6 @@ static void do_pidfile(void)
fclose(f);
} else if (errno != ENOENT)
bb_perror_msg_and_die("open pidfile %s", pidfile);
-
}
static void do_procinit(void)
@@ -146,28 +146,28 @@ static void do_procinit(void)
static int do_stop(void)
{
- RESERVE_CONFIG_BUFFER(what, 1024);
+ char *what;
struct pid_list *p;
int killed = 0;
do_procinit();
if (cmdname)
- strcpy(what, cmdname);
+ what = xstrdup(cmdname);
else if (execname)
- strcpy(what, execname);
+ what = xstrdup(execname);
else if (pidfile)
- sprintf(what, "process in pidfile `%.200s'", pidfile);
+ what = xasprintf("process in pidfile '%s'", pidfile);
else if (userspec)
- sprintf(what, "process(es) owned by `%s'", userspec);
+ what = xasprintf("process(es) owned by '%s'", userspec);
else
- bb_error_msg_and_die ("internal error, please report");
+ bb_error_msg_and_die("internal error, please report");
if (!found) {
if (!quiet)
- printf("no %s found; none killed.\n", what);
+ printf("no %s found; none killed\n", what);
if (ENABLE_FEATURE_CLEAN_UP)
- RELEASE_CONFIG_BUFFER(what);
+ free(what);
return -1;
}
for (p = found; p; p = p->next) {
@@ -183,10 +183,10 @@ static int do_stop(void)
for (p = found; p; p = p->next)
if(p->pid < 0)
printf(" %d", -p->pid);
- printf(").\n");
+ puts(")");
}
if (ENABLE_FEATURE_CLEAN_UP)
- RELEASE_CONFIG_BUFFER(what);
+ free(what);
return killed;
}
diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c
index 4c18e5d51..3e916f422 100644
--- a/networking/udhcp/common.c
+++ b/networking/udhcp/common.c
@@ -29,9 +29,7 @@ long uptime(void)
*/
static inline void sanitize_fds(void)
{
- int fd = open(bb_dev_null, O_RDWR, 0);
- if (fd < 0)
- return;
+ int fd = xopen(bb_dev_null, O_RDWR);
while (fd < 3)
fd = dup(fd);
close(fd);
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 4422d3099..a0e81bb13 100644
--- a/networking/udhcp/dumpleases.c
+++ b/networking/udhcp/dumpleases.c
@@ -13,9 +13,9 @@
int dumpleases_main(int argc, char *argv[])
{
- FILE *fp;
+ int fp;
int i, c, mode = REMAINING;
- long expires;
+ unsigned long expires;
const char *file = LEASES_FILE;
struct dhcpOfferedAddr lease;
struct in_addr addr;
@@ -43,11 +43,11 @@ int dumpleases_main(int argc, char *argv[])
}
}
- fp = xfopen(file, "r");
+ fp = xopen(file, O_RDONLY);
printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at");
/* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */
- while (fread(&lease, sizeof(lease), 1, fp)) {
+ while (full_read(fp, &lease, sizeof(lease)) == sizeof(lease)) {
printf(":%02x"+1, lease.chaddr[0]);
for (i = 1; i < 6; i++) {
printf(":%02x", lease.chaddr[i]);
@@ -59,23 +59,16 @@ int dumpleases_main(int argc, char *argv[])
if (!expires)
printf("expired\n");
else {
- if (expires > 60*60*24) {
- printf("%ld days, ", expires / (60*60*24));
- expires %= 60*60*24;
- }
- if (expires > 60*60) {
- printf("%ld hours, ", expires / (60*60));
- expires %= 60*60;
- }
- if (expires > 60) {
- printf("%ld minutes, ", expires / 60);
- expires %= 60;
- }
- printf("%ld seconds\n", expires);
+ unsigned d, h, m;
+ d = expires / (24*60*60); expires %= (24*60*60);
+ h = expires / (60*60); expires %= (60*60);
+ m = expires / 60; expires %= 60;
+ if (d) printf("%u days ", d);
+ printf("%02u:%02u:%02u\n", h, m, (unsigned)expires);
}
- } else printf("%s", ctime(&expires));
+ } else fputs(ctime(&expires), stdout);
}
- fclose(fp);
+ /* close(fp); */
return 0;
}
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index 317e861c0..2c2c5422c 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -272,27 +272,32 @@ int read_config(const char *file)
if (keywords[i].def[0])
keywords[i].handler(keywords[i].def, keywords[i].var);
- if (!(in = fopen(file, "r"))) {
- bb_error_msg("unable to open config file: %s", file);
+ in = fopen(file, "r");
+ if (!in) {
+ bb_error_msg("cannot open config file: %s", file);
return 0;
}
while (fgets(buffer, READ_CONFIG_BUF_SIZE, in)) {
char debug_orig[READ_CONFIG_BUF_SIZE];
+ char *p;
lm++;
- if (strchr(buffer, '\n')) *(strchr(buffer, '\n')) = '\0';
+ p = strchr(buffer, '\n');
+ if (p) *p = '\0';
if (ENABLE_FEATURE_UDHCP_DEBUG) strcpy(debug_orig, buffer);
- if (strchr(buffer, '#')) *(strchr(buffer, '#')) = '\0';
+ p = strchr(buffer, '#');
+ if (p) *p = '\0';
if (!(token = strtok(buffer, " \t"))) continue;
if (!(line = strtok(NULL, ""))) continue;
/* eat leading whitespace */
- line = line + strspn(line, " \t=");
+ line = skip_whitespace(line);
/* eat trailing whitespace */
- for (i = strlen(line); i > 0 && isspace(line[i - 1]); i--);
- line[i] = '\0';
+ i = strlen(line) - 1;
+ while (i >= 0 && isspace(line[i]))
+ line[i--] = '\0';
for (i = 0; keywords[i].keyword[0]; i++)
if (!strcasecmp(token, keywords[i].keyword))
@@ -311,14 +316,14 @@ int read_config(const char *file)
void write_leases(void)
{
- FILE *fp;
- unsigned int i;
- char buf[255];
+ int fp;
+ unsigned i;
time_t curr = time(0);
unsigned long tmp_time;
- if (!(fp = fopen(server_config.lease_file, "w"))) {
- bb_error_msg("unable to open %s for writing", server_config.lease_file);
+ fp = open(server_config.lease_file, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ if (fp < 0) {
+ bb_error_msg("cannot open %s for writing", server_config.lease_file);
return;
}
@@ -334,33 +339,38 @@ void write_leases(void)
else leases[i].expires -= curr;
} /* else stick with the time we got */
leases[i].expires = htonl(leases[i].expires);
- fwrite(&leases[i], sizeof(struct dhcpOfferedAddr), 1, fp);
+ // FIXME: error check??
+ full_write(fp, &leases[i], sizeof(leases[i]));
- /* Then restore it when done. */
+ /* then restore it when done */
leases[i].expires = tmp_time;
}
}
- fclose(fp);
+ close(fp);
if (server_config.notify_file) {
- sprintf(buf, "%s %s", server_config.notify_file, server_config.lease_file);
- system(buf);
+ char *cmd = xasprintf("%s %s", server_config.notify_file, server_config.lease_file);
+ system(cmd);
+ free(cmd);
}
}
void read_leases(const char *file)
{
- FILE *fp;
+ int fp;
unsigned int i = 0;
struct dhcpOfferedAddr lease;
- if (!(fp = fopen(file, "r"))) {
- bb_error_msg("unable to open %s for reading", file);
+ fp = open(file, O_RDONLY);
+ if (fp < 0) {
+ bb_error_msg("cannot open %s for reading", file);
return;
}
- while (i < server_config.max_leases && (fread(&lease, sizeof lease, 1, fp) == 1)) {
+ while (i < server_config.max_leases
+ && full_read(fp, &lease, sizeof(lease)) == sizeof(lease)
+ ) {
/* ADDME: is it a static lease */
if (lease.yiaddr >= server_config.start && lease.yiaddr <= server_config.end) {
lease.expires = ntohl(lease.expires);
@@ -373,5 +383,5 @@ void read_leases(const char *file)
}
}
DEBUG("Read %d leases", i);
- fclose(fp);
+ close(fp);
}
diff --git a/networking/udhcp/pidfile.c b/networking/udhcp/pidfile.c
index 8d00490af..bcb2608c5 100644
--- a/networking/udhcp/pidfile.c
+++ b/networking/udhcp/pidfile.c
@@ -23,7 +23,7 @@
#include "common.h"
-static char *saved_pidfile;
+static const char *saved_pidfile;
static void pidfile_delete(void)
{
@@ -36,14 +36,14 @@ int pidfile_acquire(const char *pidfile)
int pid_fd;
if (!pidfile) return -1;
- pid_fd = open(pidfile, O_CREAT | O_WRONLY, 0644);
+ pid_fd = open(pidfile, O_CREAT|O_WRONLY|O_TRUNC, 0644);
if (pid_fd < 0) {
- bb_perror_msg("unable to open pidfile %s", pidfile);
+ bb_perror_msg("cannot open pidfile %s", pidfile);
} else {
lockf(pid_fd, F_LOCK, 0);
if (!saved_pidfile)
atexit(pidfile_delete);
- saved_pidfile = (char *) pidfile;
+ saved_pidfile = pidfile;
}
return pid_fd;