diff options
| -rw-r--r-- | include/stdio.h | 7 | ||||
| -rw-r--r-- | include/sys/epoll.h | 12 | ||||
| -rw-r--r-- | include/syslog.h | 2 | ||||
| -rw-r--r-- | ldso/dynlink.c | 13 | ||||
| -rw-r--r-- | src/dirent/posix_getdents.c | 2 | ||||
| -rw-r--r-- | src/legacy/getusershell.c | 6 | ||||
| -rw-r--r-- | src/linux/renameat2.c | 11 | ||||
| -rw-r--r-- | src/network/inet_ntop.c | 7 | ||||
| -rw-r--r-- | src/signal/siglongjmp.c | 5 |
9 files changed, 51 insertions, 14 deletions
diff --git a/include/stdio.h b/include/stdio.h index cb858618..4ea4c170 100644 --- a/include/stdio.h +++ b/include/stdio.h @@ -158,6 +158,13 @@ char *ctermid(char *); #define L_ctermid 20 #endif +#if defined(_GNU_SOURCE) +#define RENAME_NOREPLACE (1 << 0) +#define RENAME_EXCHANGE (1 << 1) +#define RENAME_WHITEOUT (1 << 2) + +int renameat2(int, const char *, int, const char *, unsigned); +#endif #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \ || defined(_BSD_SOURCE) diff --git a/include/sys/epoll.h b/include/sys/epoll.h index ac81a841..5f975c4a 100644 --- a/include/sys/epoll.h +++ b/include/sys/epoll.h @@ -7,6 +7,7 @@ extern "C" { #include <stdint.h> #include <sys/types.h> +#include <sys/ioctl.h> #include <fcntl.h> #define __NEED_sigset_t @@ -54,6 +55,17 @@ __attribute__ ((__packed__)) #endif ; +struct epoll_params { + uint32_t busy_poll_usecs; + uint16_t busy_poll_budget; + uint8_t prefer_busy_poll; + + uint8_t __pad; +}; + +#define EPOLL_IOC_TYPE 0x8A +#define EPIOCSPARAMS _IOW(EPOLL_IOC_TYPE, 0x01, struct epoll_params) +#define EPIOCGPARAMS _IOR(EPOLL_IOC_TYPE, 0x02, struct epoll_params) int epoll_create(int); int epoll_create1(int); diff --git a/include/syslog.h b/include/syslog.h index 5b4d2964..57599e07 100644 --- a/include/syslog.h +++ b/include/syslog.h @@ -18,7 +18,7 @@ extern "C" { #define LOG_PRIMASK 7 #define LOG_PRI(p) ((p)&LOG_PRIMASK) -#define LOG_MAKEPRI(f, p) (((f)<<3)|(p)) +#define LOG_MAKEPRI(f, p) ((f)|(p)) #define LOG_MASK(p) (1<<(p)) #define LOG_UPTO(p) ((1<<((p)+1))-1) diff --git a/ldso/dynlink.c b/ldso/dynlink.c index 42687da2..3b57c07f 100644 --- a/ldso/dynlink.c +++ b/ldso/dynlink.c @@ -362,19 +362,14 @@ static struct symdef get_lfs64(const char *name) "pwritev\0readdir\0scandir\0sendfile\0setrlimit\0" "stat\0statfs\0statvfs\0tmpfile\0truncate\0versionsort\0" "__fxstat\0__fxstatat\0__lxstat\0__xstat\0"; - size_t l; - char buf[16]; - for (l=0; name[l]; l++) { - if (l >= sizeof buf) goto nomatch; - buf[l] = name[l]; - } if (!strcmp(name, "readdir64_r")) return find_sym(&ldso, "readdir_r", 1); - if (l<2 || name[l-2]!='6' || name[l-1]!='4') + size_t l = strnlen(name, 18); + if (l<2 || name[l-2]!='6' || name[l-1]!='4' || name[l]) goto nomatch; - buf[l-=2] = 0; for (p=lfs64_list; *p; p++) { - if (!strcmp(buf, p)) return find_sym(&ldso, buf, 1); + if (!strncmp(name, p, l-2) && !p[l-2]) + return find_sym(&ldso, p, 1); while (*p) p++; } nomatch: diff --git a/src/dirent/posix_getdents.c b/src/dirent/posix_getdents.c index b19e8127..26c16ac6 100644 --- a/src/dirent/posix_getdents.c +++ b/src/dirent/posix_getdents.c @@ -3,7 +3,7 @@ #include <errno.h> #include "syscall.h" -int posix_getdents(int fd, void *buf, size_t len, int flags) +ssize_t posix_getdents(int fd, void *buf, size_t len, int flags) { if (flags) return __syscall_ret(-EOPNOTSUPP); if (len>INT_MAX) len = INT_MAX; diff --git a/src/legacy/getusershell.c b/src/legacy/getusershell.c index 5fecdec2..1c5d98ec 100644 --- a/src/legacy/getusershell.c +++ b/src/legacy/getusershell.c @@ -25,8 +25,10 @@ char *getusershell(void) ssize_t l; if (!f) setusershell(); if (!f) return 0; - l = getline(&line, &linesize, f); - if (l <= 0) return 0; + do { + l = getline(&line, &linesize, f); + if (l <= 0) return 0; + } while (line[0] == '#' || line[0] == '\n'); if (line[l-1]=='\n') line[l-1]=0; return line; } diff --git a/src/linux/renameat2.c b/src/linux/renameat2.c new file mode 100644 index 00000000..b8060388 --- /dev/null +++ b/src/linux/renameat2.c @@ -0,0 +1,11 @@ +#define _GNU_SOURCE +#include <stdio.h> +#include "syscall.h" + +int renameat2(int oldfd, const char *old, int newfd, const char *new, unsigned flags) +{ +#ifdef SYS_renameat + if (!flags) return syscall(SYS_renameat, oldfd, old, newfd, new); +#endif + return syscall(SYS_renameat2, oldfd, old, newfd, new, flags); +} diff --git a/src/network/inet_ntop.c b/src/network/inet_ntop.c index 4bfef2c5..f442f47d 100644 --- a/src/network/inet_ntop.c +++ b/src/network/inet_ntop.c @@ -34,7 +34,12 @@ const char *inet_ntop(int af, const void *restrict a0, char *restrict s, socklen for (i=best=0, max=2; buf[i]; i++) { if (i && buf[i] != ':') continue; j = strspn(buf+i, ":0"); - if (j>max) best=i, max=j; + /* The leading sequence of zeros (best==0) is + * disadvantaged compared to sequences elsewhere + * as it doesn't have a leading colon. One extra + * character is required for another sequence to + * beat it fairly. */ + if (j>max+(best==0)) best=i, max=j; } if (max>3) { buf[best] = buf[best+1] = ':'; diff --git a/src/signal/siglongjmp.c b/src/signal/siglongjmp.c index bc317acc..53789b23 100644 --- a/src/signal/siglongjmp.c +++ b/src/signal/siglongjmp.c @@ -5,5 +5,10 @@ _Noreturn void siglongjmp(sigjmp_buf buf, int ret) { + /* If sigsetjmp was called with nonzero savemask flag, the address + * longjmp will return to is inside of sigsetjmp. The signal mask + * will then be restored in the returned-to context instead of here, + * which matters if the context we are returning from may not have + * sufficient stack space for signal delivery. */ longjmp(buf, ret); } |