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path: root/libpwdgrp/pwd_grp.c
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Diffstat (limited to 'libpwdgrp/pwd_grp.c')
-rw-r--r--libpwdgrp/pwd_grp.c177
1 files changed, 91 insertions, 86 deletions
diff --git a/libpwdgrp/pwd_grp.c b/libpwdgrp/pwd_grp.c
index acb1d96bb..26e8ff469 100644
--- a/libpwdgrp/pwd_grp.c
+++ b/libpwdgrp/pwd_grp.c
@@ -42,13 +42,17 @@
/**********************************************************************/
/* Prototypes for internal functions. */
-static int bb__pgsreader(int (*parserfunc)(void *d, char *line), void *data,
- char *__restrict line_buff, size_t buflen, FILE *f);
-
-static int bb__parsepwent(void *pw, char *line);
-static int bb__parsegrent(void *gr, char *line);
+static int bb__pgsreader(
+ int FAST_FUNC (*parserfunc)(void *d, char *line),
+ void *data,
+ char *__restrict line_buff,
+ size_t buflen,
+ FILE *f);
+
+static int FAST_FUNC bb__parsepwent(void *pw, char *line);
+static int FAST_FUNC bb__parsegrent(void *gr, char *line);
#if ENABLE_USE_BB_SHADOW
-static int bb__parsespent(void *sp, char *line);
+static int FAST_FUNC bb__parsespent(void *sp, char *line);
#endif
/**********************************************************************/
@@ -230,7 +234,7 @@ int sgetspent_r(const char *string, struct spwd *result_buf,
if (buflen < PWD_BUFFER_SIZE) {
DO_ERANGE:
- errno=rv;
+ errno = rv;
goto DONE;
}
@@ -405,14 +409,17 @@ int getpw(uid_t uid, char *buf)
if (!buf) {
errno = EINVAL;
- } else if (!getpwuid_r(uid, &resultbuf, buffer, sizeof(buffer), &result)) {
+ return -1;
+ }
+
+ if (!getpwuid_r(uid, &resultbuf, buffer, sizeof(buffer), &result)) {
if (sprintf(buf, "%s:%s:%lu:%lu:%s:%s:%s\n",
resultbuf.pw_name, resultbuf.pw_passwd,
(unsigned long)(resultbuf.pw_uid),
(unsigned long)(resultbuf.pw_gid),
resultbuf.pw_gecos, resultbuf.pw_dir,
resultbuf.pw_shell) >= 0
- ) {
+ ) {
return 0;
}
}
@@ -644,7 +651,7 @@ static gid_t *getgrouplist_internal(int *ngroups_ptr, const char *user, gid_t gi
for (m = group.gr_mem; *m; m++) {
if (strcmp(*m, user) != 0)
continue;
- group_list = xrealloc_vector(group_list, 3, ngroups);
+ group_list = xrealloc_vector(group_list, /*8=2^3:*/ 3, ngroups);
group_list[ngroups++] = group.gr_gid;
break;
}
@@ -686,16 +693,17 @@ int putpwent(const struct passwd *__restrict p, FILE *__restrict f)
if (!p || !f) {
errno = EINVAL;
- } else {
- /* No extra thread locking is needed above what fprintf does. */
- if (fprintf(f, "%s:%s:%lu:%lu:%s:%s:%s\n",
- p->pw_name, p->pw_passwd,
- (unsigned long)(p->pw_uid),
- (unsigned long)(p->pw_gid),
- p->pw_gecos, p->pw_dir, p->pw_shell) >= 0
- ) {
- rv = 0;
- }
+ return rv;
+ }
+
+ /* No extra thread locking is needed above what fprintf does. */
+ if (fprintf(f, "%s:%s:%lu:%lu:%s:%s:%s\n",
+ p->pw_name, p->pw_passwd,
+ (unsigned long)(p->pw_uid),
+ (unsigned long)(p->pw_gid),
+ p->pw_gecos, p->pw_dir, p->pw_shell) >= 0
+ ) {
+ rv = 0;
}
return rv;
@@ -703,38 +711,39 @@ int putpwent(const struct passwd *__restrict p, FILE *__restrict f)
int putgrent(const struct group *__restrict p, FILE *__restrict f)
{
- static const char format[] ALIGN1 = ",%s";
-
- char **m;
- const char *fmt;
int rv = -1;
if (!p || !f) { /* Sigh... glibc checks. */
errno = EINVAL;
- } else {
- if (fprintf(f, "%s:%s:%lu:",
- p->gr_name, p->gr_passwd,
- (unsigned long)(p->gr_gid)) >= 0
- ) {
+ return rv;
+ }
- fmt = format + 1;
+ if (fprintf(f, "%s:%s:%lu:",
+ p->gr_name, p->gr_passwd,
+ (unsigned long)(p->gr_gid)) >= 0
+ ) {
+ static const char format[] ALIGN1 = ",%s";
- assert(p->gr_mem);
- m = p->gr_mem;
+ char **m;
+ const char *fmt;
- while (1) {
- if (!*m) {
- if (fputc('\n', f) >= 0) {
- rv = 0;
- }
- break;
- }
- if (fprintf(f, fmt, *m) < 0) {
- break;
+ fmt = format + 1;
+
+ assert(p->gr_mem);
+ m = p->gr_mem;
+
+ while (1) {
+ if (!*m) {
+ if (fputc('\n', f) >= 0) {
+ rv = 0;
}
- ++m;
- fmt = format;
+ break;
+ }
+ if (fprintf(f, fmt, *m) < 0) {
+ break;
}
+ m++;
+ fmt = format;
}
}
@@ -742,7 +751,7 @@ int putgrent(const struct group *__restrict p, FILE *__restrict f)
}
#if ENABLE_USE_BB_SHADOW
-static const unsigned char _sp_off[] ALIGN1 = {
+static const unsigned char put_sp_off[] ALIGN1 = {
offsetof(struct spwd, sp_lstchg), /* 2 - not a char ptr */
offsetof(struct spwd, sp_min), /* 3 - not a char ptr */
offsetof(struct spwd, sp_max), /* 4 - not a char ptr */
@@ -753,9 +762,7 @@ static const unsigned char _sp_off[] ALIGN1 = {
int putspent(const struct spwd *p, FILE *stream)
{
- static const char ld_format[] ALIGN1 = "%ld:";
-
- const char *f;
+ const char *fmt;
long x;
int i;
int rv = -1;
@@ -767,13 +774,13 @@ int putspent(const struct spwd *p, FILE *stream)
goto DO_UNLOCK;
}
- for (i = 0; i < sizeof(_sp_off); i++) {
- f = ld_format;
- x = *(const long *)(((const char *) p) + _sp_off[i]);
+ for (i = 0; i < sizeof(put_sp_off); i++) {
+ fmt = "%ld:";
+ x = *(long *)((char *)p + put_sp_off[i]);
if (x == -1) {
- f += 3;
+ fmt += 3;
}
- if (fprintf(stream, f, x) < 0) {
+ if (fprintf(stream, fmt, x) < 0) {
goto DO_UNLOCK;
}
}
@@ -805,7 +812,7 @@ static const unsigned char pw_off[] ALIGN1 = {
offsetof(struct passwd, pw_shell) /* 6 */
};
-static int bb__parsepwent(void *data, char *line)
+static int FAST_FUNC bb__parsepwent(void *data, char *line)
{
char *endptr;
char *p;
@@ -815,9 +822,9 @@ static int bb__parsepwent(void *data, char *line)
while (1) {
p = (char *) data + pw_off[i];
- if ((i & 6) ^ 2) { /* i!=2 and i!=3 */
+ if (i < 2 || i > 3) {
*((char **) p) = line;
- if (i==6) {
+ if (i == 6) {
return 0;
}
/* NOTE: glibc difference - glibc allows omission of
@@ -844,8 +851,8 @@ static int bb__parsepwent(void *data, char *line)
}
}
- *line++ = 0;
- ++i;
+ *line++ = '\0';
+ i++;
} /* while (1) */
return -1;
@@ -859,7 +866,7 @@ static const unsigned char gr_off[] ALIGN1 = {
offsetof(struct group, gr_gid) /* 2 - not a char ptr */
};
-static int bb__parsegrent(void *data, char *line)
+static int FAST_FUNC bb__parsegrent(void *data, char *line)
{
char *endptr;
char *p;
@@ -878,8 +885,8 @@ static int bb__parsegrent(void *data, char *line)
if (!line) {
break;
}
- *line++ = 0;
- ++i;
+ *line++ = '\0';
+ i++;
} else {
*((gid_t *) p) = strtoul(line, &endptr, 10);
@@ -954,18 +961,18 @@ static int bb__parsegrent(void *data, char *line)
#if ENABLE_USE_BB_SHADOW
static const unsigned char sp_off[] ALIGN1 = {
- offsetof(struct spwd, sp_namp), /* 0 */
- offsetof(struct spwd, sp_pwdp), /* 1 */
- offsetof(struct spwd, sp_lstchg), /* 2 - not a char ptr */
- offsetof(struct spwd, sp_min), /* 3 - not a char ptr */
- offsetof(struct spwd, sp_max), /* 4 - not a char ptr */
- offsetof(struct spwd, sp_warn), /* 5 - not a char ptr */
- offsetof(struct spwd, sp_inact), /* 6 - not a char ptr */
- offsetof(struct spwd, sp_expire), /* 7 - not a char ptr */
- offsetof(struct spwd, sp_flag) /* 8 - not a char ptr */
+ offsetof(struct spwd, sp_namp), /* 0: char* */
+ offsetof(struct spwd, sp_pwdp), /* 1: char* */
+ offsetof(struct spwd, sp_lstchg), /* 2: long */
+ offsetof(struct spwd, sp_min), /* 3: long */
+ offsetof(struct spwd, sp_max), /* 4: long */
+ offsetof(struct spwd, sp_warn), /* 5: long */
+ offsetof(struct spwd, sp_inact), /* 6: long */
+ offsetof(struct spwd, sp_expire), /* 7: long */
+ offsetof(struct spwd, sp_flag) /* 8: unsigned long */
};
-static int bb__parsespent(void *data, char *line)
+static int FAST_FUNC bb__parsespent(void *data, char *line)
{
char *endptr;
char *p;
@@ -978,31 +985,26 @@ static int bb__parsespent(void *data, char *line)
*((char **) p) = line;
line = strchr(line, ':');
if (!line) {
- break;
+ break; /* error */
}
} else {
*((long *) p) = strtoul(line, &endptr, 10);
-
if (endptr == line) {
- *((long *) p) = (i != 8) ? -1L : (long)(~0UL);
+ *((long *) p) = -1L;
}
-
line = endptr;
-
if (i == 8) {
- if (!*endptr) {
- return 0;
+ if (*line != '\0') {
+ break; /* error */
}
- break;
+ return 0; /* all ok */
}
-
- if (*endptr != ':') {
- break;
+ if (*line != ':') {
+ break; /* error */
}
}
-
*line++ = '\0';
- ++i;
+ i++;
}
return EINVAL;
@@ -1016,9 +1018,12 @@ static int bb__parsespent(void *data, char *line)
*
* Returns 0 on success and ENOENT for end-of-file (glibc concession).
*/
-
-static int bb__pgsreader(int (*parserfunc)(void *d, char *line), void *data,
- char *__restrict line_buff, size_t buflen, FILE *f)
+static int bb__pgsreader(
+ int FAST_FUNC (*parserfunc)(void *d, char *line),
+ void *data,
+ char *__restrict line_buff,
+ size_t buflen,
+ FILE *f)
{
int skip;
int rv = ERANGE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 07:16:35 +0000