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redhat analysis: pgrep

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This commit is contained in:
Jim Warner 2011-10-06 15:58:26 -05:00 committed by Sami Kerola
parent 415c593ad5
commit b23baee15c
1 changed files with 11 additions and 5 deletions
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16
pgrep.c
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@ -193,19 +193,22 @@ static union el *read_pidfile(void)
int fd; int fd;
struct stat sbuf; struct stat sbuf;
char *endp; char *endp;
int pid; int n, pid;
union el *list = NULL; union el *list = NULL;
fd = open(opt_pidfile, O_RDONLY|O_NOCTTY|O_NONBLOCK); fd = open(opt_pidfile, O_RDONLY|O_NOCTTY|O_NONBLOCK);
if(fd<0) if(fd<0)
goto out; goto just_ret;
if(fstat(fd,&sbuf) || !S_ISREG(sbuf.st_mode) || sbuf.st_size<1) if(fstat(fd,&sbuf) || !S_ISREG(sbuf.st_mode) || sbuf.st_size<1)
goto out; goto out;
// type of lock, if any, is not standardized on Linux // type of lock, if any, is not standardized on Linux
if(opt_lock && !has_flock(fd) && !has_fcntl(fd)) if(opt_lock && !has_flock(fd) && !has_fcntl(fd))
goto out; goto out;
memset(buf,'\0',sizeof buf); memset(buf,'\0',sizeof buf);
buf[read(fd,buf+1,sizeof buf-2)] = '\0'; n = read(fd,buf+1,sizeof buf-2);
if (n<1)
goto out;
buf[n] = '\0';
pid = strtoul(buf+1,&endp,10); pid = strtoul(buf+1,&endp,10);
if(endp<=buf+1 || pid<1 || pid>0x7fffffff) if(endp<=buf+1 || pid<1 || pid>0x7fffffff)
goto out; goto out;
@ -216,6 +219,7 @@ static union el *read_pidfile(void)
list[1].num = pid; list[1].num = pid;
out: out:
close(fd); close(fd);
just_ret:
return list; return list;
} }
@ -376,6 +380,7 @@ static PROCTAB *do_openproc (void)
} }
flags |= PROC_UID; flags |= PROC_UID;
ptp = openproc (flags, uids, num); ptp = openproc (flags, uids, num);
free(uids);
} else { } else {
ptp = openproc (flags); ptp = openproc (flags);
} }
@ -404,6 +409,7 @@ static regex_t * do_regcomp (void)
} }
re_err = regcomp (preg, re, REG_EXTENDED | REG_NOSUB | opt_case); re_err = regcomp (preg, re, REG_EXTENDED | REG_NOSUB | opt_case);
free(re);
if (re_err) { if (re_err) {
regerror (re_err, preg, errbuf, sizeof(errbuf)); regerror (re_err, preg, errbuf, sizeof(errbuf));
fputs(errbuf,stderr); fputs(errbuf,stderr);
@ -530,8 +536,8 @@ static union el * select_procs (int *num)
memset (&task, 0, sizeof (task)); memset (&task, 0, sizeof (task));
} }
closeproc (ptp); closeproc (ptp);
*num = matches; *num = matches;
free(preg);
return list; return list;
} }