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author | Vincent Sanders <vince@kyllikki.org> | 2015-03-31 22:41:37 +0100 |
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committer | Vincent Sanders <vince@kyllikki.org> | 2015-03-31 22:41:37 +0100 |
commit | 82c7a7a4baf4a7a15381ee720799dc41c3d54909 (patch) | |
tree | 5f3b47ce1c0aca854323a8c7a06c94db5e05c373 /utils | |
parent | 87a38ca5c1624cb86d8c031b38166a00494d6be0 (diff) | |
download | netsurf-82c7a7a4baf4a7a15381ee720799dc41c3d54909.tar.gz netsurf-82c7a7a4baf4a7a15381ee720799dc41c3d54909.tar.bz2 |
Fix RISC OS not having a pread/pwrite implementation.
Diffstat (limited to 'utils')
-rw-r--r-- | utils/config.h | 20 | ||||
-rw-r--r-- | utils/utils.c | 32 |
2 files changed, 49 insertions, 3 deletions
diff --git a/utils/config.h b/utils/config.h index c45b865fe..cfb9d83c3 100644 --- a/utils/config.h +++ b/utils/config.h @@ -39,7 +39,7 @@ char *strcasestr(const char *haystack, const char *needle); #endif /* Although these platforms might have strftime or strptime they - * appear not to support the time_t seconds format specifier. + * appear not to support the time_t seconds format specifier. */ #if (defined(_WIN32) || defined(riscos) || defined(__HAIKU__) || defined(__BEOS__) || defined(__amigaos4__) || defined(__AMIGA__) || defined(__MINT__)) #undef HAVE_STRPTIME @@ -49,8 +49,9 @@ char *strcasestr(const char *haystack, const char *needle); #define HAVE_STRFTIME #endif -/* For some reason, UnixLib defines this unconditionally. - * Assume we're using UnixLib if building for RISC OS. */ +/* For some reason, UnixLib defines this unconditionally. Assume we're using + * UnixLib if building for RISC OS. + */ #if ((defined(_GNU_SOURCE) && !defined(__APPLE__)) || defined(riscos)) #define HAVE_STRCHRNUL #else @@ -58,6 +59,19 @@ char *strcasestr(const char *haystack, const char *needle); char *strchrnul(const char *s, int c); #endif +/* Although these are in POSIX and implemented most places, RISC OS is + * missing them. + */ +#if (defined(riscos)) +#undef HAVE_PREAD +#undef HAVE_PWRITE +ssize_t pread(int fd, void *buf, size_t count, off_t offset); +ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset); +#else +#define HAVE_PREAD +#define HAVE_PWRITE +#endif + #define HAVE_SYS_SELECT #define HAVE_INETATON #if (defined(_WIN32)) diff --git a/utils/utils.c b/utils/utils.c index 5c8acd6f0..722e32302 100644 --- a/utils/utils.c +++ b/utils/utils.c @@ -32,6 +32,7 @@ #include <regex.h> #include <time.h> #include <errno.h> +#include <unistd.h> #include "utils/config.h" #include "utils/log.h" @@ -628,3 +629,34 @@ nserror nsc_snptimet(char *str, size_t size, time_t *timep) return NSERROR_OK; } + +#ifndef HAVE_PREAD + +ssize_t pread(int fd, void *buf, size_t count, off_t offset) +{ + off_t sk; + + sk = lseek(fd, offset, SEEK_SET); + if (sk == -1) { + return (off_t)-1; + } + return read(fd, buf, count); +} + +#endif + + +#ifndef HAVE_PWRITE + +ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset) +{ + off_t sk; + + sk = lseek(fd, offset, SEEK_SET); + if (sk == (off_t)-1) { + return -1; + } + return write(fd, buf, count); +} + +#endif |