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Check return value of chmod() and fcntl()

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This commit is contained in:
Miroslav Lichvar 2014-06-06 12:07:31 +02:00
parent 9b630a0664
commit a8693a21f8
4 changed files with 15 additions and 9 deletions
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8
reference.c
View file

@ -359,10 +359,12 @@ update_drift_file(double freq_ppm, double skew)
/* Clone the file attributes from the existing file if there is one. */
if (!stat(drift_file,&buf)) {
if (chown(temp_drift_file,buf.st_uid,buf.st_gid)) {
LOG(LOGS_WARN, LOGF_Reference, "Could not change ownership of temporary driftfile %s.tmp", drift_file);
if (chown(temp_drift_file,buf.st_uid,buf.st_gid) ||
chmod(temp_drift_file,buf.st_mode & 0777)) {
LOG(LOGS_WARN, LOGF_Reference,
"Could not change ownership or permissions of temporary driftfile %s.tmp",
drift_file);
}
chmod(temp_drift_file,buf.st_mode&0777);
}
/* Rename the temporary file to the correct location (see rename(2) for details). */

8
rtc_linux.c
View file

@ -508,10 +508,12 @@ write_coefs_to_file(int valid,time_t ref_time,double offset,double rate)
/* Clone the file attributes from the existing file if there is one. */
if (!stat(coefs_file_name,&buf)) {
if (chown(temp_coefs_file_name,buf.st_uid,buf.st_gid)) {
LOG(LOGS_WARN, LOGF_RtcLinux, "Could not change ownership of temporary RTC file %s.tmp", coefs_file_name);
if (chown(temp_coefs_file_name,buf.st_uid,buf.st_gid) ||
chmod(temp_coefs_file_name,buf.st_mode & 0777)) {
LOG(LOGS_WARN, LOGF_RtcLinux,
"Could not change ownership or permissions of temporary RTC file %s.tmp",
coefs_file_name);
}
chmod(temp_coefs_file_name,buf.st_mode&0777);
}
/* Rename the temporary file to the correct location (see rename(2) for details). */

6
util.c
View file

@ -647,7 +647,7 @@ UTI_FloatHostToNetwork(double x)
/* ================================================== */
void
int
UTI_FdSetCloexec(int fd)
{
int flags;
@ -655,8 +655,10 @@ UTI_FdSetCloexec(int fd)
flags = fcntl(fd, F_GETFD);
if (flags != -1) {
flags |= FD_CLOEXEC;
fcntl(fd, F_SETFD, flags);
return !fcntl(fd, F_SETFD, flags);
}
return 0;
}
/* ================================================== */

2
util.h
View file

@ -108,7 +108,7 @@ extern double UTI_FloatNetworkToHost(Float x);
extern Float UTI_FloatHostToNetwork(double x);
/* Set FD_CLOEXEC on descriptor */
extern void UTI_FdSetCloexec(int fd);
extern int UTI_FdSetCloexec(int fd);
extern int UTI_GenerateNTPAuth(int hash_id, const unsigned char *key, int key_len,
const unsigned char *data, int data_len, unsigned char *auth, int auth_len);