diff options
Diffstat (limited to 'man3/mkstemp.3')
| -rw-r--r-- | man3/mkstemp.3 | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/man3/mkstemp.3 b/man3/mkstemp.3 index dbfa252..2b7a986 100644 --- a/man3/mkstemp.3 +++ b/man3/mkstemp.3 @@ -13,7 +13,7 @@ .\" Modified 990328, aeb .\" 2008-06-19, mtk, Added mkostemp(); various other changes .\" -.TH mkstemp 3 2023-07-20 "Linux man-pages 6.05.01" +.TH mkstemp 3 2023-10-31 "Linux man-pages 6.7" .SH NAME mkstemp, mkostemp, mkstemps, mkostemps \- create a unique temporary file .SH LIBRARY @@ -22,18 +22,18 @@ Standard C library .SH SYNOPSIS .nf .B #include <stdlib.h> -.PP +.P .BI "int mkstemp(char *" template ); .BI "int mkostemp(char *" template ", int " flags ); .BI "int mkstemps(char *" template ", int " suffixlen ); .BI "int mkostemps(char *" template ", int " suffixlen ", int " flags ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR mkstemp (): .nf _XOPEN_SOURCE >= 500 @@ -41,18 +41,18 @@ Feature Test Macro Requirements for glibc (see || /* glibc >= 2.12: */ _POSIX_C_SOURCE >= 200809L || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE .fi -.PP +.P .BR mkostemp (): .nf _GNU_SOURCE .fi -.PP +.P .BR mkstemps (): .nf /* glibc >= 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _SVID_SOURCE || _BSD_SOURCE .fi -.PP +.P .BR mkostemps (): .nf _GNU_SOURCE @@ -64,7 +64,7 @@ function generates a unique temporary filename from .IR template , creates and opens the file, and returns an open file descriptor for the file. -.PP +.P The last six characters of .I template must be "XXXXXX" and these are replaced with a string that makes the @@ -72,7 +72,7 @@ filename unique. Since it will be modified, .I template must not be a string constant, but should be declared as a character array. -.PP +.P The file is created with permissions 0600, that is, read plus write for owner only. The returned file descriptor provides both read and write access to the file. @@ -80,7 +80,7 @@ The file is opened with the .BR open (2) .B O_EXCL flag, guaranteeing that the caller is the process that creates the file. -.PP +.P The .BR mkostemp () function is like @@ -111,7 +111,7 @@ argument given to is unnecessary, and produces errors on some .\" Reportedly, FreeBSD systems. -.PP +.P The .BR mkstemps () function is like @@ -127,7 +127,7 @@ is of the form .IR "prefixXXXXXXsuffix" , and the string XXXXXX is modified as for .BR mkstemp (). -.PP +.P The .BR mkostemps () function is to @@ -166,7 +166,7 @@ is less than characters long, or the last 6 characters before the suffix in .I template were not XXXXXX. -.PP +.P These functions may also fail with any of the errors described for .BR open (2). .SH ATTRIBUTES @@ -186,7 +186,6 @@ T{ .BR mkostemps () T} Thread safety MT-Safe .TE -.sp 1 .SH STANDARDS .TP .BR mkstemp () @@ -215,14 +214,14 @@ glibc 2.7. .TP .BR mkostemps () glibc 2.11. -.PP +.P In glibc versions 2.06 and earlier, the file is created with permissions 0666, that is, read and write for all users. This old behavior may be a security risk, especially since other UNIX flavors use 0600, and somebody might overlook this detail when porting programs. POSIX.1-2008 adds a requirement that the file be created with mode 0600. -.PP +.P More generally, the POSIX specification of .BR mkstemp () does not say anything |