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-rw-r--r--src/misc/getopt.c3
-rw-r--r--src/misc/getrlimit.c2
-rw-r--r--src/misc/initgroups.c26
-rw-r--r--src/misc/lockf.c2
-rw-r--r--src/misc/mntent.c56
-rw-r--r--src/misc/nftw.c6
-rw-r--r--src/misc/setrlimit.c2
-rw-r--r--src/misc/syslog.c3
8 files changed, 79 insertions, 21 deletions
diff --git a/src/misc/getopt.c b/src/misc/getopt.c
index c3f66995..b02b81c3 100644
--- a/src/misc/getopt.c
+++ b/src/misc/getopt.c
@@ -87,7 +87,8 @@ int getopt(int argc, char * const argv[], const char *optstring)
if (optstring[i] == ':') {
optarg = 0;
if (optstring[i+1] != ':' || optpos) {
- optarg = argv[optind++] + optpos;
+ optarg = argv[optind++];
+ if (optpos) optarg += optpos;
optpos = 0;
}
if (optind > argc) {
diff --git a/src/misc/getrlimit.c b/src/misc/getrlimit.c
index bf676307..a5558d81 100644
--- a/src/misc/getrlimit.c
+++ b/src/misc/getrlimit.c
@@ -26,5 +26,3 @@ int getrlimit(int resource, struct rlimit *rlim)
return ret;
#endif
}
-
-weak_alias(getrlimit, getrlimit64);
diff --git a/src/misc/initgroups.c b/src/misc/initgroups.c
index 922a9581..101f5c7b 100644
--- a/src/misc/initgroups.c
+++ b/src/misc/initgroups.c
@@ -1,11 +1,29 @@
#define _GNU_SOURCE
#include <grp.h>
#include <limits.h>
+#include <stdlib.h>
int initgroups(const char *user, gid_t gid)
{
- gid_t groups[NGROUPS_MAX];
- int count = NGROUPS_MAX;
- if (getgrouplist(user, gid, groups, &count) < 0) return -1;
- return setgroups(count, groups);
+ gid_t buf[32], *groups = buf;
+ int count = sizeof buf / sizeof *buf, prev_count = count;
+ while (getgrouplist(user, gid, groups, &count) < 0) {
+ if (groups != buf) free(groups);
+
+ /* Return if failure isn't buffer size */
+ if (count <= prev_count)
+ return -1;
+
+ /* Always increase by at least 50% to limit to
+ * logarithmically many retries on TOCTOU races. */
+ if (count < prev_count + (prev_count>>1))
+ count = prev_count + (prev_count>>1);
+
+ groups = calloc(count, sizeof *groups);
+ if (!groups) return -1;
+ prev_count = count;
+ }
+ int ret = setgroups(count, groups);
+ if (groups != buf) free(groups);
+ return ret;
}
diff --git a/src/misc/lockf.c b/src/misc/lockf.c
index 16a80bec..0162442b 100644
--- a/src/misc/lockf.c
+++ b/src/misc/lockf.c
@@ -28,5 +28,3 @@ int lockf(int fd, int op, off_t size)
errno = EINVAL;
return -1;
}
-
-weak_alias(lockf, lockf64);
diff --git a/src/misc/mntent.c b/src/misc/mntent.c
index d404fbe3..76f9c162 100644
--- a/src/misc/mntent.c
+++ b/src/misc/mntent.c
@@ -20,6 +20,42 @@ int endmntent(FILE *f)
return 1;
}
+static char *unescape_ent(char *beg)
+{
+ char *dest = beg;
+ const char *src = beg;
+ while (*src) {
+ const char *val;
+ unsigned char cval = 0;
+ if (*src != '\\') {
+ *dest++ = *src++;
+ continue;
+ }
+ if (src[1] == '\\') {
+ ++src;
+ *dest++ = *src++;
+ continue;
+ }
+ val = src + 1;
+ for (int i = 0; i < 3; ++i) {
+ if (*val >= '0' && *val <= '7') {
+ cval <<= 3;
+ cval += *val++ - '0';
+ } else {
+ break;
+ }
+ }
+ if (cval) {
+ *dest++ = cval;
+ src = val;
+ } else {
+ *dest++ = *src++;
+ }
+ }
+ *dest = 0;
+ return beg;
+}
+
struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen)
{
int n[8], use_internal = (linebuf == SENTINEL);
@@ -45,7 +81,7 @@ struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int bufle
len = strlen(linebuf);
if (len > INT_MAX) continue;
for (i = 0; i < sizeof n / sizeof *n; i++) n[i] = len;
- sscanf(linebuf, " %n%*s%n %n%*s%n %n%*s%n %n%*s%n %d %d",
+ sscanf(linebuf, " %n%*[^ \t\n]%n %n%*[^ \t\n]%n %n%*[^ \t\n]%n %n%*[^ \t\n]%n %d %d",
n, n+1, n+2, n+3, n+4, n+5, n+6, n+7,
&mnt->mnt_freq, &mnt->mnt_passno);
} while (linebuf[n[0]] == '#' || n[1]==len);
@@ -55,10 +91,10 @@ struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int bufle
linebuf[n[5]] = 0;
linebuf[n[7]] = 0;
- mnt->mnt_fsname = linebuf+n[0];
- mnt->mnt_dir = linebuf+n[2];
- mnt->mnt_type = linebuf+n[4];
- mnt->mnt_opts = linebuf+n[6];
+ mnt->mnt_fsname = unescape_ent(linebuf+n[0]);
+ mnt->mnt_dir = unescape_ent(linebuf+n[2]);
+ mnt->mnt_type = unescape_ent(linebuf+n[4]);
+ mnt->mnt_opts = unescape_ent(linebuf+n[6]);
return mnt;
}
@@ -79,5 +115,13 @@ int addmntent(FILE *f, const struct mntent *mnt)
char *hasmntopt(const struct mntent *mnt, const char *opt)
{
- return strstr(mnt->mnt_opts, opt);
+ size_t l = strlen(opt);
+ char *p = mnt->mnt_opts;
+ for (;;) {
+ if (!strncmp(p, opt, l) && (!p[l] || p[l]==',' || p[l]=='='))
+ return p;
+ p = strchr(p, ',');
+ if (!p) return 0;
+ p++;
+ }
}
diff --git a/src/misc/nftw.c b/src/misc/nftw.c
index 8dcff7fe..71bc62ee 100644
--- a/src/misc/nftw.c
+++ b/src/misc/nftw.c
@@ -31,6 +31,8 @@ static int do_nftw(char *path, int (*fn)(const char *, const struct stat *, int,
int err;
struct FTW lev;
+ st.st_dev = st.st_ino = 0;
+
if ((flags & FTW_PHYS) ? lstat(path, &st) : stat(path, &st) < 0) {
if (!(flags & FTW_PHYS) && errno==ENOENT && !lstat(path, &st))
type = FTW_SLN;
@@ -46,7 +48,7 @@ static int do_nftw(char *path, int (*fn)(const char *, const struct stat *, int,
type = FTW_F;
}
- if ((flags & FTW_MOUNT) && h && st.st_dev != h->dev)
+ if ((flags & FTW_MOUNT) && h && type != FTW_NS && st.st_dev != h->dev)
return 0;
new.chain = h;
@@ -138,5 +140,3 @@ int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, str
pthread_setcancelstate(cs, 0);
return r;
}
-
-weak_alias(nftw, nftw64);
diff --git a/src/misc/setrlimit.c b/src/misc/setrlimit.c
index 5b713cf3..edb413fa 100644
--- a/src/misc/setrlimit.c
+++ b/src/misc/setrlimit.c
@@ -49,5 +49,3 @@ int setrlimit(int resource, const struct rlimit *rlim)
return __syscall_ret(ret);
#endif
}
-
-weak_alias(setrlimit, setrlimit64);
diff --git a/src/misc/syslog.c b/src/misc/syslog.c
index 7dc0c1be..710202f9 100644
--- a/src/misc/syslog.c
+++ b/src/misc/syslog.c
@@ -11,6 +11,7 @@
#include <fcntl.h>
#include "lock.h"
#include "fork_impl.h"
+#include "locale_impl.h"
static volatile int lock[1];
static char log_ident[32];
@@ -99,7 +100,7 @@ static void _vsyslog(int priority, const char *message, va_list ap)
now = time(NULL);
gmtime_r(&now, &tm);
- strftime(timebuf, sizeof timebuf, "%b %e %T", &tm);
+ strftime_l(timebuf, sizeof timebuf, "%b %e %T", &tm, C_LOCALE);
pid = (log_opt & LOG_PID) ? getpid() : 0;
l = snprintf(buf, sizeof buf, "<%d>%s %n%s%s%.0d%s: ",
generated by cgit v1.2.1 (git 2.18.0) at 2025-10-31 08:27:15 +0000